tests: Add scenario to test Admin static user password change

Use CSC to change the password for the Admin static user and test login
with this new password on Dex

Refs: #2569

tests/post/features/service_configuration.feature

@@ -7,3 +7,14 @@ Feature: Cluster and Services Configurations
         And we have a 'metalk8s-dex-config' CSC in namespace 'metalk8s-auth'
         When we update the CSC 'spec.deployment.replicas' to '3'
         Then we have '3' at 'status.available_replicas' for 'dex' Deployment in namespace 'metalk8s-auth'
+
+  Scenario: Update Admin static user password
+        Given the Kubernetes API is available
+        And we have a 'metalk8s-dex-config' CSC in namespace 'metalk8s-auth'
+        # NOTE: Consider that admin user is the first of the userlist
+        # Update password to "new-password"
+        When we update the CSC 'spec.localuserstore.userlist.0.hash' to '$2y$14$pDe0vj917rR3XJQ5iEZvhuSGoWkZg2/qBN/mMLqwFSz9S7EYcbIpO'
+        Then the control-plane Ingress path '/oidc' is available
+        And pods with label 'app.kubernetes.io/name=dex' are 'Ready'
+        And we are not able to login to Dex as '[email protected]' using password 'password'
+        And we are able to login to Dex as '[email protected]' using password 'new-password'

tests/post/steps/test_service_configuration.py

@@ -18,6 +18,12 @@ def test_service_config_propagation(host):
     pass
 
 
+@scenario('../features/service_configuration.feature',
+          'Update Admin static user password')
+def test_static_user_change(host):
+    pass
+
+
 # }}}
 # Given {{{