Refactor azure module structure
Apply review comments
Merge pull request #1066 from andrerod/structure

Factoring preview management APIs as separate modules
Update wrappers
Lock xmlbuilder version
Merge pull request #1073 from WindowsAzure/release-0.7.18

Release 0.7.18
Merge
Merge remote-tracking branch 'upstream/dev' into structure
Update wrappers
Lock xmlbuilder version
Update wrappers
Fix comments
Merge pull request #1070 from andrerod/structure

Update wrappers
Reusing dependencies
1069: Fix incorrect reference
Fix node-uuid version
Merge pull request #1076 from andrerod/structure

Reusing dependencies