Revert "Disable Koschei keytab volume for now"

This reverts commit 0d039c1020.

roles/openshift-apps/koschei/templates/backend-deployment.yml

@@ -24,10 +24,10 @@ spec:
         - name: config-volume
           mountPath: /etc/koschei
           readOnly: true
-#        - name: keytab-volume
-#          mountPath: /etc/krb5.keytab
-#          subPath: krb5.keytab
-#          readOnly: true
+        - name: keytab-volume
+          mountPath: /etc/krb5.keytab
+          subPath: krb5.keytab
+          readOnly: true
         resources:
           limits:
             memory: 256Mi
@@ -35,6 +35,6 @@ spec:
       - name: config-volume
         secret:
           secretName: backend-config
-#      - name: keytab-volume
-#        secret:
-#          secretName: backend-keytab
+      - name: keytab-volume
+        secret:
+          secretName: backend-keytab