Merge pull request #157 from unwin/develop

DevelopFB 4856 - Fix for caching bad credentials.
Added test for underscore, throws exception for non conformant imageId's
We shall never speak of this mistake....
Merge pull request #159 from unwin/develop+image_support_underscore+exception

Added test for underscore, throws exception for non conformant imageId's
updates to RDS
Merge pull request #160 from unwin/develop+RDS

updates to RDS
adds exception message  "Access Not Configured. Please use Google
Developers Console to activate the API for your project."

Passed back via a rube goldberg mechanism (class private field) so as to
not require a method signature change.
WIP
Merge pull request #163 from unwin/develop+RDS_Sept_10

WIP
Merge pull request #161 from unwin/develop+better_GCE_exceptions

adds exception message  "Access Not Configured. Please use Google
moved another deprecated to the bottom.
WIP
and remove a testing bug i just introduced
Hopeful fix for FB 5201
cleanup
added coreos support
Merge pull request #168 from unwin/develop+coreos

added coreos support
Merge pull request #166 from unwin/develop+RDS_Sept_10

added proxy support, and wire logging of rest/json api calls (exception of post data)
Merge pull request #165 from unwin/develop+fb5201

Hopeful fix for FB 5201
x-dasein-id: now in header. needs to have meaningful payload added...
Conflicts:
	src/main/java/org/dasein/cloud/google/Google.java