GCE userData support. TheWeatherCompany/grid-api/issues/#108
Update for response format if userData isn't specified. TheWeatherCompany/grid-api/issues/#108
Encoding userData value. TheWeatherCompany/grid-api/issues/#108
TheWeatherCompany/grid-api/issues/#722

Return userData value for instances in plaintext
Revert "TheWeatherCompany/grid-api/issues/#722"

This reverts commit c761815078f0535638117de23f34818af046923e.
TheWeatherCompany/grid-api#722
TheWeatherCompany/grid-api#715. fix

Fix for invalid region id is used. Some update for zones checking in
listInstances method.
use HTTP error code for failed operations
isFailed private modifier
Merge remote-tracking branch 'origin/develop' into develop
GoogleServerSupport alignment
during authorization handle properly IO exceptions and errors which differ from HttpResponseException (TheWeatherCompany/grid-api#772)
update distro management to use artifactory
change config management location
Merge branch 'develop' into issue-768