no validation when creating share group type

[Ashley Rodriguez]

Description
===========
Administrators currently are able to create a share-group-type,
using incompatible share-types.
For example, Admin creates a share-group-type with group_spec snapshot_support = True.
In creating this share-group-type, they list share_types that are configured with
snapshot_support = False.
There is no error message, or at the least a warning message, informing Admin of this
incompatibility.

Steps to reproduce
==================

* manila type-create sharetype1 true --create_share_from_snapshot_support false
* manila share-group-type-create group1 sharetype1 --group-spec consistent_snapshot_support=true

Expected result
===============
Perhaps a user message with message_level=Warning, or a response from CLI
"Warning: creating a share-group-type with incompatible share-type extra specs"
or something along those lines.
It shouldn't necessarily stop the admin from doing this, in case a configuration like this
was intentional based on intended end-user experience.

Environment
===========
developing on master
python-manilaclient = 2.7.1
clouds.yaml includes "shared_file_system_api_version = 2.63"

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/manila/+/809004