Support GCS backend bucket region location

[itsavvy-ankur]

When a new GCS backend bucket is created it defaults to the US multi-region. This behaviour should be configurable so that the backend state bucket can be created in a desired location.

Perhaps needs changes to support the config in :

• https://github.com/boltops-tools/terraspace_plugin_google/blob/master/lib/terraspace_plugin_google/interfaces/config.rb

and the implementation changes in

• https://github.com/boltops-tools/terraspace_plugin_google/blob/cace2a1dba1e0da6c79d12a077651942c6172007/lib/terraspace_plugin_google/interfaces/backend.rb#L22

[sbernier-corp]

Hello,

On our project, we are working for a french customer ;-) We would need to set the bucket in a region close to the customer.

Do you think this change could be done ?

Thanks