Added service principal, role assignment, and tags#14

Closed

djyou wants to merge 14 commits intomasterfrom

Commits on Sep 19, 2016

Added "az acr" commands for Azure container registries
djyou
committed

Commits on Oct 1, 2016

Refined create/update SP
djyou
committed

Commits on Oct 5, 2016

Commits on Oct 6, 2016

Updated storage account apiversion, removed it from parameters
djyou
committed