[DMAAP] Use the common mariadb-galera instance

Have following updates for DMAAP-DR-PROV:
- Add section under .Values.global for shared mariadb instance default
info with a condition to instantiate local instance
- Add section under .Values for mariadb-init and mariadb-galera projects
- Add condition under requirments.yaml to install local mariadb instance
- Update deployment with DB host parameter and reflect it into resource
file (using the templates defined under templates/_mariadb.tpl)

Issue-ID: OOM-2774
Signed-off-by: Mahmoud Abdelhamid <mahmoud.abdelhamid@orange.com>
Change-Id: I8a8e2c179710680282f4ad686dc44e75356a1b81
diff --git a/kubernetes/dmaap/components/dmaap-dr-prov/requirements.yaml b/kubernetes/dmaap/components/dmaap-dr-prov/requirements.yaml
index 65867f5..3c25c94 100644
--- a/kubernetes/dmaap/components/dmaap-dr-prov/requirements.yaml
+++ b/kubernetes/dmaap/components/dmaap-dr-prov/requirements.yaml
@@ -23,7 +23,10 @@
     version: ~8.x-0
     repository: '@local'
   - name: mariadb-galera
-    alias: mariadb
+    version: ~8.x-0
+    repository: '@local'
+    condition: global.mariadbGalera.localCluster
+  - name: mariadb-init
     version: ~8.x-0
     repository: '@local'
   - name: certInitializer