Add dbus interface to start grace period for use by HA NFS.
Added padding into the length of the handle over the wire.
This will allow dNFS to function because it does not do the padding itself.
Removed svc_auth.h which isn't needed in ganesha anymore.
Tirpc took the functionality that depended on it.
Also, it was out of date which was confusing.
Release NLM locks missing an inc on cache_inode.
Jenkins: Sigmund's integration in Jenkins. Step 1
(cherry picked from commit a2260eb298e54f8646e69ac4ad9bd132777b87bc)

Signed-off-by: Jim Lieb <jlieb@panasas.com>
Merge remote-tracking branch 'marc/nlm-bug' into merge_next
Merge remote-tracking branch 'bongiojp/next_w_dnfs2' into merge_next