update nfs config files for new nfs-utils

[Andreas Hasenack]

Once we update samba to 4.15.x[1], we need to update the ctdb source to use the new nfs-utils[2] config file /etc/nfs.conf instead of /etc/default/nfs-*.[3]

1. https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1946839
2. https://launchpad.net/ubuntu/+source/nfs-utils/1:2.6.1-1~exp1ubuntu1
3. https://lists.ubuntu.com/archives/ubuntu-devel/2022-February/041843.html

[Andreas Hasenack (ahasenack)]

The CTDB scripts will only fallback to using `nfsconf` (which works for us) if they a) don't find `/etc/default/nfs-*`; or b) the var they source from those files is empty.

Since the nfs-utils packaging is not deleting `/etc/default/nfs-*`, the CTDB scripts will set command-line parameters for the nfs daemons based on those files, and override what might be set in `/etc/nfs.conf`. I'll handle this in the ctdb+nfs-utils specific card.

[Launchpad Janitor (janitor)]

This bug was fixed in the package samba - 2:4.15.5~dfsg-0ubuntu4

---------------
samba (2:4.15.5~dfsg-0ubuntu4) jammy; urgency=medium

  * Build dlz module for bind 9.18.x (LP: #1964032)
    - d/p/add-support-for-bind-918.patch: build a dlz module for
      bind 9.18.x
    - d/samba-libs.install: remove fixme comment
    - d/p/add-support-for-bind-918-2.patch: also update the provisioning
      tool and template config file

 -- Andreas Hasenack <email address hidden> Fri, 25 Mar 2022 14:53:19 -0300