LU-13474 gss: do not return -ERESTART when gss rpc times out

LU-13474 gss: do not return -ERESTART when gss rpc times out

When a client receives an RPC time out while it tries to negotiate
a GSS context with the servers, it must not return -ERESTART.
Otherwise, the client would keep on sending GSS negotiation requests
to the same peer, instead of letting the HA failover mechanism try
different service nodes.

Test-Parameters: trivial
Test-Parameters: env=SHARED_KEY=true mdscount=2 mdtcount=4 osscount=1 ostcount=8 clientcount=2 testlist=sanity,recovery-small,sanity-sec
Test-Parameters: env=SHARED_KEY=true mdscount=2 mdtcount=4 osscount=1 ostcount=8 clientcount=2 testlist=sanity,recovery-small,sanity-sec
Test-Parameters: env=SHARED_KEY=true mdscount=2 mdtcount=4 osscount=1 ostcount=8 clientcount=2 testlist=sanity,recovery-small,sanity-sec
Test-Parameters: env=SHARED_KEY=true mdscount=2 mdtcount=4 osscount=1 ostcount=8 clientcount=2 testlist=sanity,recovery-small,sanity-sec
Signed-off-by: Sebastien Buisson <sbuisson@ddn.com>
Change-Id: Ifc9cc02ea3ddefe6c5095cbb464a054c9027c920
Reviewed-on: https://review.whamcloud.com/38310
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>