Missing support for nfs backends

[Liam Young]

When provisioning a volume through cinder which is provisioned from the storage array as nfs both cinder and nova-compute fail to mount the nfs volume because nfs-common is not installed. NOTE: it is presented to the guest as a block device not as an nfs mount this is not the manilla use case.

Error in logs:

2019-02-20 16:57:20.643 30983 ERROR nova.virt.block_device [instance: 627e98b2-45d3-420c-abaa-fe1949b019a5] Command: mount -t nfs 10.5.0.41:/tank/data/volume-0087df85-caa5-4bd2-9af4-8b874e4af7e7 /var/lib/nova/mnt/216fd175b2d9c11a1ed12927a346c4d6
2019-02-20 16:57:20.643 30983 ERROR nova.virt.block_device [instance: 627e98b2-45d3-420c-abaa-fe1949b019a5] Exit code: 32
2019-02-20 16:57:20.643 30983 ERROR nova.virt.block_device [instance: 627e98b2-45d3-420c-abaa-fe1949b019a5] Stdout: u''
2019-02-20 16:57:20.643 30983 ERROR nova.virt.block_device [instance: 627e98b2-45d3-420c-abaa-fe1949b019a5] Stderr: u'mount: /var/lib/nova/mnt/216fd175b2d9c11a1ed12927a346c4d6: bad option; for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount.<type> helper program.\n'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/638222

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/638223

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/638222
Committed: https://git.openstack.org/cgit/openstack/charm-cinder/commit/?id=233dc6a7605b38fb22868b4253112471eada8683
Submitter: Zuul
Branch: master

commit 233dc6a7605b38fb22868b4253112471eada8683
Author: Liam Young <email address hidden>
Date: Wed Feb 20 17:23:08 2019 +0000

    Add support for nfs cinder volumes

    Cinder volumes which are provisioned via nfs are initially mounted
    on the cinder node. For this to work the nfs-common package is
    needed.

    Change-Id: Iac11c262c6e5408303b3afda8633b0252055cfec
    Closes-Bug: #1816820

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/638223
Committed: https://git.openstack.org/cgit/openstack/charm-nova-compute/commit/?id=e5fc658b26105eed7ac97eeb52174b3e51ab0a62
Submitter: Zuul
Branch: master

commit e5fc658b26105eed7ac97eeb52174b3e51ab0a62
Author: Liam Young <email address hidden>
Date: Wed Feb 20 17:20:10 2019 +0000

    Add support for nfs cinder volumes

    Cinder volumes which are provisioned via nfs need to be mounted on
    the compute nodes. For this to work the nfs-common package is needed.

    Closes-Bug: #1816820
    Change-Id: I5d536817b2098698cecd4627408a82321bf7fb9b