client: Use mount option nolock in puavo-ltsp-init-nfs /home mounts for
ltspservers. There seems to be stability issues when running multiple
(>10) firefox processes on a single server over NFS. Call traces
hint that the problem may be related to nfs locking. This may need to
be reverted if there's no change in behaviour or the underlying
problem gets fixed.

Example call trace:

CPU: 6 PID: 13254 Comm: mozStorage #6 Not tainted 3.10.28.opinsys1 #2

Call Trace:
[<c106a5ac>] prepare_to_wait+0x4c/0x80
[<f8920497>] nfs_iocounter_wait+0x87/0xb0 [nfs]
[<c106a3a0>] ? autoremove_wake_function+0x50/0x50
[<f8917e05>] do_unlk+0x45/0xb0 [nfs]
[<f8918125>] nfs_lock+0x115/0x150 [nfs]
[<f8918010>] ? nfs_flock+0xb0/0xb0 [nfs]
[<c119afd3>] vfs_lock_file+0x23/0x50
[<c119b0e5>] do_lock_file_wait.part.16+0x35/0xc0
[<c119c55f>] fcntl_setlk64+0xef/0x1f0
[<c1166ce7>] SyS_fcntl64+0xb7/0xf0
[<c1609e4d>] sysenter_do_call+0x12/0x28
[<c1600000>] ? __mutex_lock_interruptible_slowpath+0xf0/0x1c0