Check proper providers keys when reading config
Check proper providers keys when reading config

Check the corret provider keys for region-name, api-timeout, and
service-type when reading them in from the provider yaml config.
Specifically in yaml they use '-' and not '_' which is the internal
shade/oscc/$client key.

Change-Id: I95273b1f28d313b9ae799f1a90ccd9693e60e18e

Tesora/tesora-nodepool,seandst/nodepool,Tesora/tesora-nodepool,citrix-openstack/nodepool,citrix-openstack/nodepool,seandst/nodepool