Identity providers are now associated with domains. This change
allows a user to specify a domain by ID or by name when creating
an identity provider. [0]
This also adds the column for Domain ID in listing.
Updating a domain for an identity provider is not supported, so
that isn't changed.
[0]. Id18b8b2fe853b97631bc990df8188ed64a6e1275
Closes-Bug: 1698390
Change-Id: Icc408e2fe88f257d5863bd3df716a777d52befcc