NetApp driver fails to create from snapshot on same host different servers

[Douglas Viroel]

Description
===========
The create from snapshot function doesn't expect a scenario where both source and new host are equal, but share servers are different. A new share server is created, even when destination host is equal to parent's hosts, if one of the following occurs:
1. The parent's share server is in a invalid state (e.g admin-status down)
2. The share server limit was reached[1]

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

* Set a share server limit 1 in the backend
* Create a share
* Create a snapshot
* Request to create a share from a snapshot

Expected result
===============
The share from snapshot lands in a different share server, since the parent share server limit has been reached.

Actual result
=============
NetApp driver fails to create the new share from snapshot.

References
==========
[1] https://review.opendev.org/c/openstack/manila/+/762725

[Vida Haririan (vhariria)]

Additional comments http://eavesdrop.openstack.org/meetings/manila/2021/manila.2021-04-08-15.00.log.html

[Goutham Pacha Ravi (gouthamr)]

Carlos, we're closing on xena-rc1 soon.

i'm moving this bug to Yoga-1 since i don't see an active change; please let me know if this assessment is inaccurate.