Use common secret template in mariadb-galera

Instead of defining the secret in some custom way let's use the common
template (common.secret). To avoid some issues in ONAP components that
depend on this chart let's do not remove for now the default username
and password. We will do this when all services properly utylize
secrets to store mariadb credentials.

Issue-ID: OOM-2053
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Change-Id: I78e224299cccd9632192ee03a45cd077e6f0906f
diff --git a/kubernetes/common/mariadb-init/values.yaml b/kubernetes/common/mariadb-init/values.yaml
index 095ff62..d148ba6 100644
--- a/kubernetes/common/mariadb-init/values.yaml
+++ b/kubernetes/common/mariadb-init/values.yaml
@@ -24,7 +24,7 @@
     servicePort: 3306
     # set these two values if you want to access an 'out of ONAP' mariadb
     userRootSecret: default
-    userRootSecretKey: db-root-password
+    userRootSecretKey: password
 
 #################################################################
 # Application configuration defaults.