Resource group name not created with region from CLI

Repro steps:
```
sls create -t azure-nodejs -p myNewApp
sls deploy
# Note that resource group name is sls-wus-dev-myNewApp-rg
sls deploy --region "East US"
```
Error message:
```
Error --------------------------------------------------

  Error: Invalid resource group location 'eastus'. The Resource group already exists in location 'westus'
```