Move deployment-specific templates to parent chart

This change provides a single centralized location
(onap parent chart) to change/install secrets, persistent
volumes, service account(s), RBAC and configuration
overrides. It also eliminates the need for a 2-step install
of setup and application charts.

Users would customize the onap parent chart to install both
the deployment-specific resources and one or more "enabled"
sub charts, using a command like the following:

helm install local/onap -f dev.yaml

where dev.yaml (or prod.yaml, etc.) provides the customization
of application subcharts to deploy.

Change-Id: Idbef28ffa404ea35922a4c3994605bdc27f3471e
Issue-ID: OOM-817
Signed-off-by: Mike Elliott <mike.elliott@amdocs.com>