shadowkeep: add signing type for recovery/factory

BUG=b:159934902
TEST=None

Change-Id: Ia82eb96113193d81b1d1b648ede8dd8a6b1cf00b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2316390
Commit-Queue: YH Lin <yueherngl@chromium.org>
Tested-by: YH Lin <yueherngl@chromium.org>
Reviewed-by: David Burger <dburger@chromium.org>
diff --git a/config/chromeos_config.py b/config/chromeos_config.py
index c99ee37..cd10b64 100644
--- a/config/chromeos_config.py
+++ b/config/chromeos_config.py
@@ -2678,6 +2678,10 @@
           'hw_tests_disabled_bug': 'b/152055929',
       },
 
+      'shadowkeep-release': {
+          'sign_types': ['recovery', 'factory'],
+      },
+
       'volteer-release': {
           'sign_types': ['recovery', 'factory'],
       },
diff --git a/config/config_dump.json b/config/config_dump.json
index 0a8e95f..eac3350 100644
--- a/config/config_dump.json
+++ b/config/config_dump.json
@@ -29669,6 +29669,10 @@
             "shadowkeep"
         ],
         "important": false,
+        "sign_types": [
+            "recovery",
+            "factory"
+        ],
         "vm_tests": [],
         "vm_tests_override": null
     },
@@ -29692,6 +29696,10 @@
         "luci_builder": "Try",
         "paygen": false,
         "push_image": false,
+        "sign_types": [
+            "recovery",
+            "factory"
+        ],
         "suite_scheduling": false,
         "vm_tests": [],
         "vm_tests_override": null