Set APP_NAME for gitea

Change the app name from gitea to opendev. Also, add a tagline
because why not?

And add two missing settings.  And fix the pandoc command for
RST rendering.  And fix the gitea URL.  Keep one copy of old
replicasets.  Keep 4 replicas.  Add a dummp env variable to trigger
deployments.

Change-Id: I0182d18a838d444d5853238fa2e48b4511383a94

kubernetes/gitea/app.ini.j2

@@ -1,8 +1,12 @@
+APP_NAME = OpenDev: Free Software Needs Free Tools
+RUN_MODE = prod
+RUN_USER = git
+
 [server]
 APP_DATA_PATH    = /data/gitea
 SSH_DOMAIN       = localhost
 HTTP_PORT        = 3000
-ROOT_URL         = http://38.108.68.96/
+ROOT_URL         = http://38.108.68.64/
 DISABLE_SSH      = false
 SSH_PORT         = 22
 LFS_CONTENT_PATH = /data/git/lfs
@@ -69,6 +73,6 @@ ENABLED = true
 ; List of file extensions that should be rendered by an external command
 FILE_EXTENSIONS = .rst
 ; External command to render all matching extensions
-RENDER_COMMAND = "/usr/bin/pandoc"
+RENDER_COMMAND = "/usr/bin/pandoc -f rst"
 ; Input is not a standard input but a file
 IS_INPUT_FILE = false

kubernetes/gitea/k8s/deployment.yaml

@@ -6,7 +6,8 @@ metadata:
   labels:
     app: gitea
 spec:
-  replicas: 1
+  revisionHistoryLimit: 1
+  replicas: 4
   selector:
     matchLabels:
       app: gitea
@@ -28,6 +29,9 @@ spec:
       containers:
         - name: gitea
           image: opendevorg/gitea
+          env:
+            - name: deployment_id
+              value: '1'  # Increment to trigger a deployment.
           ports:
             - containerPort: 3000
           volumeMounts: