Add non-clustered redis as sub-chart (#672)

Co-authored-by: Julien <julienym@gmail.com>
Co-authored-by: justusbunsi <sk.bunsenbrenner@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/672
Reviewed-by: justusbunsi <justusbunsi@noreply.gitea.com>
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

unittests/config/session-config.yaml

@@ -8,6 +8,8 @@ tests:
     set:
       redis-cluster:
         enabled: true
+      redis:
+        enabled: false
     asserts:
       - documentIndex: 0
         equal:
@@ -16,11 +18,28 @@ tests:
             PROVIDER=redis
             PROVIDER_CONFIG=redis+cluster://:@gitea-unittests-redis-cluster-headless.testing.svc.cluster.local:6379/0?pool_size=100&idle_timeout=180s&
 
-  - it: "session is configured correctly for 'memory' when redis-cluster is disabled"
+  - it: "session is configured correctly for redis"
     template: templates/gitea/config.yaml
     set:
       redis-cluster:
         enabled: false
+      redis:
+        enabled: true
+    asserts:
+      - documentIndex: 0
+        equal:
+          path: stringData.session
+          value: |-
+            PROVIDER=redis
+            PROVIDER_CONFIG=redis://:changeme@gitea-unittests-redis-headless.testing.svc.cluster.local:6379/0?pool_size=100&idle_timeout=180s&
+
+  - it: "session is configured correctly for 'memory' when redis (and redis-cluster) is disabled"
+    template: templates/gitea/config.yaml
+    set:
+      redis-cluster:
+        enabled: false
+      redis:
+        enabled: false
     asserts:
       - documentIndex: 0
         equal:
@@ -29,11 +48,13 @@ tests:
             PROVIDER=memory
             PROVIDER_CONFIG=
 
-  - it: "session can be customized when redis-cluster is disabled"
+  - it: "session can be customized when redis (and redis-cluster) is disabled"
     template: templates/gitea/config.yaml
     set:
       redis-cluster:
         enabled: false
+      redis:
+        enabled: false
       gitea.config.session.PROVIDER: custom-provider
       gitea.config.session.PROVIDER_CONFIG: custom-provider-config
     asserts: