Merge pull request #2030 from guangyang/release-0.7.0

update changelog for SDK 2.2 upgrade
Fixes for Add-AzureEnvironment
Fix for 2028 - check for current subscription before accessing it
Apply CR
Merge pull request #2031 from ogail/env

Fixes for Add-AzureEnvironment
Merge pull request #2032 from christav/storage-fix-2028

Fix for 2028 - check for current subscription before accessing it
fix a create quick vm issue