CA-114341: increase lock retry count
CA-114341: increase lock retry count

The current value of lock retry is too small and results in VDI.activate
giving up trying to acquire the lock too early. Doubling this value
seems to rectify the problem.

Signed-off-by: Thanos Makatos <862b8f32632fb16f0ed2230e282a184d02e09dba@citrix.com>
Reviewed-by: Germano Percossi <1811ef1c36bab1195f69031187febf2a003dfc12@citrix.com>

chandrikas/sm,chandrikas/sm,kostaslamda/sm,geosharath/sm,djs55/sm,germanop/sm,xapi-project/sm,geosharath/sm,xapi-project/sm,djs55/sm,geosharath/sm,BobBall/sm,djs55/sm,siddharthv/sm,pritha-srivastava/sm,martinjorge/sm,malcolmcrossley/sm,martinjorge/sm,siddharthv/sm,siddharthv/sm,robertbreker/sm,martinjorge/sm,xapi-project/sm,kostaslamda/sm,BobBall/sm,robertbreker/sm,malcolmcrossley/sm,robertbreker/sm,pritha-srivastava/sm,BobBall/sm,kostaslamda/sm,chandrikas/sm,germanop/sm,malcolmcrossley/sm,germanop/sm,pritha-srivastava/sm