Google Cloud Storage credentials are now always stored within the data
provider.
Added a migration to read credentials from disk and store them inside the
data provider.
After v2.3 we can also remove credentials_path
Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
Using groups simplifies the administration of multiple accounts by
letting you assign settings once to a group, instead of multiple
times to each individual user.
Signed-off-by: Nicola Murino <nicola.murino@gmail.com>