Update vagrant images to support vmware providers
Support --check mode for ansible

In order to support --check we need to ensure that registered
vars exist before checking their stdout. Otherwise ansible
errors out.
Merge pull request #1201 from edx/jarv/diff-and-check

Jarv/diff and check
use deployment, not environment
Coding conventions
Merge pull request #1202 from edx/jarv/migrate-typo

use deployment, not environment
fixing extra_var_args
Merge pull request #1204 from edx/jarv/migrate-typo

fixing extra_var_args
fixing typo again, using correct name
Merge pull request #1205 from edx/jarv/migrate-typo

fixing typo again, using correct name
syntax error on the when condition
Merge pull request #1207 from edx/jarv/defined-syntax-error

syntax error on the when condition
another when condition syntax error
Merge pull request #1208 from edx/jarv/defined-syntax-error

another when condition syntax error
Merge pull request #1206 from edx/cg/add_vmware_vagrant_providers

Update vagrant images to support vmware providers
Merge pull request #1203 from edx/han/apache

Coding conventions, puting spaces in front of {{ and changing ${ vars
Adding ubuntu_14.04 option

Whitespace for readability
edxapp user typo
Merge pull request #1213 from edx/jarv/fix-mongo-typo

edxapp user typo
Jenkins-datadog configuration

When using datadog on Jenkins, it should include datadog's provided Jenkins capabilities.

Includes jenkins-specific datadog concfiguration