Review user home dirs mounts on ssh-proxy for read-only and mount protocol consistency

Need to review deploy mount parameters for user home dirs.

It looks like the intended config of issue #153 (closed) and merge !139 (merged) are not in place. That code introduced item.ops build var to set the parameters of the NFS mounts.

Additional inconsistencies are nfs version and protocol (udp vs tcp).

[root@ssh-proxy ~]# mount  | grep nfs
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)
gpfs.rc.uab.edu:/data/user/home on /gpfs4 type nfs (rw,relatime,sync,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,t
imeo=600,retrans=2,sec=sys,mountaddr=172.20.1.16,mountvers=3,mountport=58145,mountproto=udp,local_lock=none,addr=172.20.1.16)
nfs.gpfs5.rc.uab.edu:/gpfs/user/home on /gpfs5 type nfs4 (rw,relatime,sync,vers=4.0,rsize=1048576,wsize=1048576,namlen=255,hard,pro
to=tcp,timeo=600,retrans=2,sec=sys,clientaddr=10.250.20.242,local_lock=none,addr=192.168.5.20)