Merge pull request #47 from pmorie/deploy-trigger-wip

Deploy trigger wip
Add deploy test for config changes
Merge pull request #48 from ironcladlou/config-change-test

Add deploy test for config changes
Add selective deploy test execution

Simple support for specifying test(s) to run. To use, set the
`TEST_PATTERN` env variable to a substring which matches a test.
Merge pull request #49 from ironcladlou/selective-deploy-test-execution

Add selective deploy test execution
Implement GenerateDeploymentConfig in client
Add debugging output
WIP: fix races