upgrade to nexus 2.7.2
Merge pull request #69 from s-bernard/fix-dirs-creation

Create pids and work directories
remove an extra squiggle brace
Merge pull request #70 from RiotGames/nexus_2.7.2

upgrade to nexus 2.7.2
Allow newer dependencies
Redirect http to https in nginx conf
Can specify repository policy (RELEASE|SNAPSHOT)