Pull in latest rightscale_volume and rightscale_backup in order to support volume types on all clouds.
Add Slack integration for Travis CI.
Merge pull request #25 from rightscale-cookbooks/st_14_13_acu182157_volume_type_input_also_gp2

St 14 13 acu182157 volume type input also gp2
Update kitchen to reorder and add new OS's for testing
Remove RHEL7
Update location of RHSM and remove CentOS 7
Now that RHSM is in the Chef Supermarket, no longer need to specify a Git location
Swap yum-epel for apt and add rhsm to RHEL65
Update tests removing obsolete code no longer used by serverspec v2.
Update git cookbook version. Update tests removing obsolete code no longer used by serverspec v2.
Update test to accomidate rounding issue.
Update deprecated should to expect
Change github org of mysql to rightscale-cookbooks-contrib.
Update branch for mysql cookbook in Berksfile.
Rounding of memory in tests on different OSs can be different for innodb_buffer_pool_size. Allow for a +/-1 range.
Add Travis CI notification via Slack.
Update location of cookbooks in Berksfile and README.md.