introduce paramter for the jclouds groupId
bump jclouds to 1.7.2-ea-brooklyn.1 version (and different group id)
remove softlayer (old stuff, since using the 172 refactor)
support new-style ID's for softlayer when detecting geography info
Merge pull request #1237 from ahgittin/jclouds-172ea1

Jclouds 172ea1