Fix python test suite for GnuTLS 3.5.12+

Backport of f42229b1fdf30ee30c6e13b01eb0c4ebd9ea9169

--- a/testenv/Test--rejected-log.py
+++ b/testenv/Test--rejected-log.py
@@ -14,7 +14,7 @@ mainpage = """
 </head>
 <body>
   <p>
-    Recurse to a <a href="http://127.0.0.1:{{port}}/secondpage.html">second page</a>.
+    Recurse to a <a href="http://localhost:{{port}}/secondpage.html">second page</a>.
   </p>
 </body>
 </html>
@@ -27,8 +27,8 @@ secondpage = """
 </head>
 <body>
   <p>
-    Recurse to a <a href="http://127.0.0.1:{{port}}/thirdpage.html">third page</a>.
-    Try the blacklisted <a href="http://127.0.0.1:{{port}}/index.html">main page</a>.
+    Recurse to a <a href="http://localhost:{{port}}/thirdpage.html">third page</a>.
+    Try the blacklisted <a href="http://localhost:{{port}}/index.html">main page</a>.
   </p>
 </body>
 </html>
@@ -41,7 +41,7 @@ thirdpage = """
 </head>
 <body>
   <p>
-    Try a hidden <a href="http://127.0.0.1:{{port}}/dummy.txt">dummy file</a>.
+    Try a hidden <a href="http://localhost:{{port}}/dummy.txt">dummy file</a>.
     Try to leave to <a href="http://no.such.domain/">another domain</a>.
   </p>
 </body>
@@ -55,9 +55,9 @@ Disallow: /dummy.txt
 
 log = """\
 REASON\tU_URL\tU_SCHEME\tU_HOST\tU_PORT\tU_PATH\tU_PARAMS\tU_QUERY\tU_FRAGMENT\tP_URL\tP_SCHEME\tP_HOST\tP_PORT\tP_PATH\tP_PARAMS\tP_QUERY\tP_FRAGMENT
-BLACKLIST\thttp%3A//127.0.0.1%3A{{port}}/index.html\tSCHEME_HTTP\t127.0.0.1\t{{port}}\tindex.html\t\t\t\thttp%3A//127.0.0.1%3A{{port}}/secondpage.html\tSCHEME_HTTP\t127.0.0.1\t{{port}}\tsecondpage.html\t\t\t
-ROBOTS\thttp%3A//127.0.0.1%3A{{port}}/dummy.txt\tSCHEME_HTTP\t127.0.0.1\t{{port}}\tdummy.txt\t\t\t\thttp%3A//127.0.0.1%3A{{port}}/thirdpage.html\tSCHEME_HTTP\t127.0.0.1\t{{port}}\tthirdpage.html\t\t\t
-SPANNEDHOST\thttp%3A//no.such.domain/\tSCHEME_HTTP\tno.such.domain\t80\t\t\t\t\thttp%3A//127.0.0.1%3A{{port}}/thirdpage.html\tSCHEME_HTTP\t127.0.0.1\t{{port}}\tthirdpage.html\t\t\t
+BLACKLIST\thttp%3A//localhost%3A{{port}}/index.html\tSCHEME_HTTP\tlocalhost\t{{port}}\tindex.html\t\t\t\thttp%3A//localhost%3A{{port}}/secondpage.html\tSCHEME_HTTP\tlocalhost\t{{port}}\tsecondpage.html\t\t\t
+ROBOTS\thttp%3A//localhost%3A{{port}}/dummy.txt\tSCHEME_HTTP\tlocalhost\t{{port}}\tdummy.txt\t\t\t\thttp%3A//localhost%3A{{port}}/thirdpage.html\tSCHEME_HTTP\tlocalhost\t{{port}}\tthirdpage.html\t\t\t
+SPANNEDHOST\thttp%3A//no.such.domain/\tSCHEME_HTTP\tno.such.domain\t80\t\t\t\t\thttp%3A//localhost%3A{{port}}/thirdpage.html\tSCHEME_HTTP\tlocalhost\t{{port}}\tthirdpage.html\t\t\t
 """
 
 dummyfile = "Don't care."
--- a/testenv/Test--spider-r.py
+++ b/testenv/Test--spider-r.py
@@ -14,8 +14,8 @@ mainpage = """
 </head>
 <body>
   <p>
-    Some text and a link to a <a href="http://127.0.0.1:{{port}}/secondpage.html">second page</a>.
-    Also, a <a href="http://127.0.0.1:{{port}}/nonexistent">broken link</a>.
+    Some text and a link to a <a href="http://localhost:{{port}}/secondpage.html">second page</a>.
+    Also, a <a href="http://localhost:{{port}}/nonexistent">broken link</a>.
   </p>
 </body>
 </html>
@@ -29,8 +29,8 @@ secondpage = """
 </head>
 <body>
   <p>
-    Some text and a link to a <a href="http://127.0.0.1:{{port}}/thirdpage.html">third page</a>.
-    Also, a <a href="http://127.0.0.1:{{port}}/nonexistent">broken link</a>.
+    Some text and a link to a <a href="http://localhost:{{port}}/thirdpage.html">third page</a>.
+    Also, a <a href="http://localhost:{{port}}/nonexistent">broken link</a>.
   </p>
 </body>
 </html>
@@ -43,8 +43,8 @@ thirdpage = """
 </head>
 <body>
   <p>
-    Some text and a link to a <a href="http://127.0.0.1:{{port}}/dummy.txt">text file</a>.
-    Also, another <a href="http://127.0.0.1:{{port}}/againnonexistent">broken link</a>.
+    Some text and a link to a <a href="http://localhost:{{port}}/dummy.txt">text file</a>.
+    Also, another <a href="http://localhost:{{port}}/againnonexistent">broken link</a>.
   </p>
 </body>
 </html>
--- a/testenv/certs/server-cert.pem
+++ b/testenv/certs/server-cert.pem
@@ -1,21 +1,21 @@
 -----BEGIN CERTIFICATE-----
-MIIDgDCCAmigAwIBAgIIVGI73zrIeeMwDQYJKoZIhvcNAQELBQAwMDERMA8GA1UE
-AxMIR05VIFdnZXQxDTALBgNVBAsTBFdnZXQxDDAKBgNVBAoTA0dOVTAiGA8yMDE0
-MTExMTE2NDAwMFoYDzk5OTkxMjMxMjM1OTU5WjAxMRIwEAYDVQQDEwkxMjcuMC4w
-LjExDTALBgNVBAsTBFdnZXQxDDAKBgNVBAoTA0dOVTCCASIwDQYJKoZIhvcNAQEB
-BQADggEPADCCAQoCggEBAMjC3Gt55EfStl6mE371+pD3/cpR5MLxkdbBss5MlIP2
-TDhiPOItLXml8oxs4BjUm3wfn3GV9iJLmbzbIWL+0kbRkQ2LCPKUf+Cln3z2ZE+r
-XwdWlT8gVfv51Opfkp2lLDVUqLfNKRGQgivjSCmLqY2LqeB0SaVNvuaD3EpqZyIH
-0E5SZgjqBHgRRtvGkcy0rOmp5SI2NASLugUioXa9OLWjpYDwodsd3ERlL0DJ1aJW
-8TC8Tqix4i0osWzar+LXBIin0Qvar9/uRHN0p1kq3p0XgNHKqWpiTT54+WYx7Pem
-v4qRXz11swiJzUL+Pw1DurQ9smbzDgAsz7V2FJnUeCcCAwEAAaOBmDCBlTAMBgNV
-HRMBAf8EAjAAMB8GA1UdEQQYMBaCCTEyNy4wLjAuMYIJbG9jYWxob3N0MBMGA1Ud
-JQQMMAoGCCsGAQUFBwMBMA8GA1UdDwEB/wQFAwMHoAAwHQYDVR0OBBYEFJfm323L
-JbKTM/tMKSt0qlUqewbnMB8GA1UdIwQYMBaAFPM+TjiESqm+wW/HYaNQ2m4pi+tU
-MA0GCSqGSIb3DQEBCwUAA4IBAQCDmuSD4IGmn0UQ5jhGQquh92Iu59j64Rrg7EIM
-zoppciyYR8gDUutOI9CEisxJz6umvAdOo5L981gcFaBv6hHWaE/krAZccR+ZXZP6
-fI9btO8My8O63fYcd2KkLEFqvKDF43i01S2LrqXdPo3uELbFZwxCmUKsexFGsoW1
-CbXbRjnS7w/f72myRmvBeDiNMuGfe1lb4IflybH3DMlKC7i0AN1JKglp+IKn5XAE
-neWR03i3UaYJsibIxj0DkTS+hVPu5MXQ9RlF5CkRdFKjGinLE/u70XyAyx0/IeAN
-e7c2MJvpdfRmTXm2ew4sNyK9RXo7Bv0Yqkl65iMscF8LNnxL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 -----END CERTIFICATE-----
--- a/testenv/certs/server-crl.pem
+++ b/testenv/certs/server-crl.pem
@@ -1,12 +1,12 @@
 -----BEGIN X509 CRL-----
-MIIB1DCBvQIBATANBgkqhkiG9w0BAQsFADAwMREwDwYDVQQDEwhHTlUgV2dldDEN
-MAsGA1UECxMEV2dldDEMMAoGA1UEChMDR05VGA8yMDE0MTExMTE2NDU1NFoYDzk5
-OTkxMjMxMjM1OTU5WjAdMBsCCFRiO986yHnjGA8yMDE0MTExMTE2NDU1NFqgNjA0
-MB8GA1UdIwQYMBaAFPM+TjiESqm+wW/HYaNQ2m4pi+tUMBEGA1UdFAQKAghUYj1E
-KHs9ijANBgkqhkiG9w0BAQsFAAOCAQEAZgwqs1VOFG39dFHHMXvBr4eJfhwiG4bC
-cL6IvLhvl9ikcyQMHrpOBtNjkCtgclSbJjjTDdera1+zuCWE0WBOJ4mojYdAIOhR
-QvSwp4NwAtibu2F/fjeXoo+LEpcRKtLvAotB30eCZ1OPrijsa/HxFILOLlayjns8
-wM4RmQC4o43y1G/1jqM8hGDg4Wz0j1URVuyP+pU55JpubV5LlExy3gIRwevD2lam
-q3hiighenJYFO3HGZkYT2SIoSpXZnQqKPJ4HwRBSg/cjOpc1y1lIIvKhmk+Cut6M
-+S5HL4pIk8vGYg57nTfOOkj1goqFkfU0DBqvVAZj02ay/VIDu61T1g==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 -----END X509 CRL-----
--- a/testenv/certs/server-template.cfg
+++ b/testenv/certs/server-template.cfg
@@ -68,7 +68,6 @@ expiration_days = -1
 # X.509 v3 extensions
 
 # A dnsname in case of a WWW server.
-dns_name = "127.0.0.1"
 dns_name = "localhost"
 
 # A subject alternative name URI
--- a/testenv/test/base_test.py
+++ b/testenv/test/base_test.py
@@ -90,7 +90,7 @@ class BaseTest:
             # ports and etc.
             # so we should record different domains respect to servers.
             domain = self.get_domain_addr(instance.server_address)
-            self.domains.append(domain[0])
+            self.domains.append('localhost')
             self.ports.append(domain[1])
 
     def exec_wget(self):