Install pre-requisites for Nginx
Propagate SERVICE_STATE from dynamic cluster members
Fix service state calculation based on review comments
Set state to RUNNING if nothing ON_FIRE and some children RUNNING
Merge pull request #1437 from grkvlt/fix/dynamic-cluster-misc

Fix some DynamicCluster issues
Adds expungeMembers to DynamicCluster’s QuarantineGroup
Merge pull request #1455 from aledsage/feature/QuarantineGroup-expungeMembers

Adds expungeMembers to DynamicCluster’s QuarantineGroup