Consider region when filtering Gnocchi base URL

Filtering by region is required for filtering by endpoint type:
tempest.lib.auth.KeystoneV3AuthProvider.base_url will always filter by
region. When no region is given the service's first URL is returned by
default – overwriting the previous result filtered by endpoint type.

Change-Id: Ibd3fde3e56c80d30ef2f66b69fe39d9d85fc0a94
1 file changed