Add user and group for tinyproxy

This CL will enable running a proxy server in a tast test.

BUG=chromium:1134511
TEST=none

Change-Id: I27a4f387ee9a23c7560d0703139c8852ca50eb66
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2453549
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Tested-by: Andreea-Elena Costinas <acostinas@google.com>
Commit-Queue: Andreea-Elena Costinas <acostinas@google.com>
diff --git a/profiles/base/accounts/group/tinyproxy b/profiles/base/accounts/group/tinyproxy
new file mode 100644
index 0000000..cddf2b8
--- /dev/null
+++ b/profiles/base/accounts/group/tinyproxy
@@ -0,0 +1,3 @@
+group:tinyproxy
+gid:20156
+users:tinyproxy
diff --git a/profiles/base/accounts/user/tinyproxy b/profiles/base/accounts/user/tinyproxy
new file mode 100644
index 0000000..0176a28
--- /dev/null
+++ b/profiles/base/accounts/user/tinyproxy
@@ -0,0 +1,6 @@
+user:tinyproxy
+uid:20156
+gid:20156
+gecos:lightweight HTTP/SSL proxy daemon
+home:/dev/null
+shell:/bin/false