install tmux debian package in common role
Creation of MariaDB role with galera cluster option
Create vagrant for building and testing cluster roles
Modify HAProxy defaults to match with vagrant cluster

- Also adds MariaDB and elasticsearch to default config
- Remove comments from vagrant-cluster playbook
- Add back verbosity to cluster play
- Make the serial play serial
Add vagrant_cluster var for handling eth0 in clusters
Move Ubuntu apt key server to common var
Merge pull request #1648 from jtriley/apt-install-tmux

install tmux debian package in common role
Merge pull request #1660 from mitodl/cg/add_mariadb_galera

Add MariaDB Role (with galera clustering)
the force option was not used correctly
Merge pull request #1661 from edx/jarv/fix-force

the force option was not used correctly
Refactor directory creation

Touch file as syslog before tee

poking Travis

suspenders

Additional locations

typo
Added play to run r.js for Insights
Creating Insights nodeenv only if it does not already exist
Updates to Make Insights Configuration Sandbox-Friendly

- Added Insights to update script
- Corrected git/ssh identity for code checkout
- Preventing duplicate nodeenv creation (and subsequent failure)
Fix host selection variable
Merge pull request #1666 from mitodl/cg/mariadb_fixes

Fix host selection variable
Merge pull request #1664 from edx/insights-rjs

Added play to run r.js for Insights
Merge pull request #1665 from edx/insights-sandbox

Updates to Make Insights Configuration Sandbox-Friendly
using dollar var
Merge pull request #1667 from edx/jarv/fix-var

using dollar var