bump node version to 8.9.3

bump node version to 8.9.1 [FEDX-410]

8.9.2

8.8.1

8.7.0

8.6.0

Update back to latest node.

The previous failures were probably due to ecommerce which should now be resolved.

playbooks/roles/common_vars/defaults/main.yml

@@ -99,7 +99,7 @@ COMMON_ENABLE_NEWRELIC_APP: False
 COMMON_ENABLE_MINOS: False
 COMMON_TAG_EC2_INSTANCE: False
 common_boto_version: '2.34.0'
-common_node_version: '6.11.1'
+common_node_version: '8.9.3'
 common_redhat_pkgs:
   - ntp
   - lynx