COMAC-170 Use common patterns in values and manifests in mcord-services

This patchset is a part of mcord-services refactoring.
1. Group values by images, nodeSelectors, resources, configs and networks.
2. Make StatefulSets have common patterns for label, resources, and nodeSelectors
3. Use fixed resource name to reduce complexities
4. Don't set namespace as a value, use the one passed with helm install
5. Use common cniPlugin and ipam for SGI and S1U networks
6. Use camel case for value names
7. Do not support old mme anymore
8. Use official omecproject repo for default images

Change-Id: I9654993c8885f12cebb1a93517119556a90127d6
diff --git a/mcord-release/mcord-services/templates/bin/_mme-init.sh.tpl b/mcord-release/mcord-services/templates/bin/_mme-init.sh.tpl
index b96bf90..a15e83c 100644
--- a/mcord-release/mcord-services/templates/bin/_mme-init.sh.tpl
+++ b/mcord-release/mcord-services/templates/bin/_mme-init.sh.tpl
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 #
 # Copyright 2019-present Open Networking Foundation
 #