Auto create project manila cephfs shares

[JohnGarbutt]

Adds a new helm chart option, that defaults to False:
provider.openstack.createManilaProjectShare

When Manila is present, and you enable this option,
Azimuth we auto create a project manila share
and that known to all appliances via some extra vars

[mkjpryor]

I'm still also unconvinced about gating this on the create_manila_project_share boolean.

Don't we want it to be done whenever Manila with the Ceph driver is available?

[JohnGarbutt]

Don't we want it to be done whenever Manila with the Ceph driver is available?

No, because of the networking requirements. It only works when the networks are setup "correctly".

Thinking about that... I probably need to simply not create a share in the case where we can't find a valid share type, as that is the way a project being setup for manila can be checked on Arcus, and its a good solution I think.

[JohnGarbutt]

Needs a quick final test.

[mkjpryor]

LGTM