[VFC] Use common mariadb-galera instance

Have following updates for VFC:
- Add section under .Values.global for shared mariadb instance default
info with a condition to instantiate local instance.
- Update the related section of Mariadb-galera under .Values
- Add condition under requirments.yaml to install local mariadb instance
* Note: Since Components initiate their own DBs and Users, there is no
need to initiate the common mariadb-galera with mariadb-init, instead
root password will injected to components to be able to create the DBs.

Have following updates for nslcm, vnflcm, vnfmgr and vnfres:
- Update .Values to accommodate for the new changes in parent .Values
file.
- Update root secret with the condition of having local mariadb or using
the common.
- Update deployments to include the definitions of mariadb service and
port defined in (common/_mariadb.tpl)

Issue-ID: OOM-2840
Signed-off-by: Mahmoud Abdelhamid <mahmoud.abdelhamid@orange.com>
Change-Id: Ia6a8e91ca3978928c4bf336a3a86ab1c6d64597a
diff --git a/kubernetes/vfc/components/vfc-vnfres/templates/deployment.yaml b/kubernetes/vfc/components/vfc-vnfres/templates/deployment.yaml
index 2577887..06258a0 100644
--- a/kubernetes/vfc/components/vfc-vnfres/templates/deployment.yaml
+++ b/kubernetes/vfc/components/vfc-vnfres/templates/deployment.yaml
@@ -42,7 +42,7 @@
         - /app/ready.py
         args:
         - --container-name
-        - {{ .Values.config.mariadbService }}
+        - '{{ ternary (index .Values "mariadb-galera" "nameOverride") .Values.global.mariadbGalera.service .Values.global.mariadbGalera.localCluster }}'
         env:
         - name: NAMESPACE
           valueFrom:
@@ -58,7 +58,7 @@
             - sh
           args:
             - -c
-            - 'MYSQL_AUTH=root:${MYSQL_ROOT_PASSWORD} ./docker-entrypoint.sh'
+            - 'MYSQL_AUTH=${MYSQL_ROOT_USER}:${MYSQL_ROOT_PASSWORD} ./docker-entrypoint.sh'
           image: {{ include "repositoryGenerator.repository" . }}/{{ .Values.image }}
           imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy }}
           ports:
@@ -83,7 +83,7 @@
             - name: SSL_ENABLED
               value: "{{ .Values.global.config.ssl_enabled }}"
             - name: MYSQL_ADDR
-              value: "{{ .Values.config.mariadbService }}:{{ .Values.config.mariadbPort }}"
+              value: '{{ include "common.mariadbService" . }}:{{ include "common.mariadbPort" . }}'
             - name: REDIS_HOST
               value: "{{ .Values.global.config.redisServiceName }}"
             - name: REDIS_PORT