added dc5 and dc6

components/opdk-install-component.yml

diff --git a/components/opdk-install-component.yml b/components/opdk-install-component.yml
index 2a62998..599291e 100644
--- a/components/opdk-install-component.yml
+++ b/components/opdk-install-component.yml
@@ -3,6 +3,8 @@
   hosts: '{{ hosts }}'
   gather_facts: no
   serial: 1
+  vars_files:
+  - ~/.apigee/credentials.yml
   roles:
   - apigee-opdk-setup-component-installer
   - { role: apigee-opdk-setup-component, profile: '{{ component_profile }}' }

installation.yml

diff --git a/installation.yml b/installation.yml
index cb77904..7856cf1 100644
--- a/installation.yml
+++ b/installation.yml
@@ -63,6 +63,7 @@
   tags:
   - dc-1-ms
   - ms
+  - cass_client
 
 - name: Refresh Management Server on DC-1
   include: components/opdk-install-component.yml