Fixes 3PAR FC driver synchronization

While running  stress tests we found missing synchronized methods.
This patch added synchronized anotations around the necessary
methods.

Fixes bug 1172503

Change-Id: I8e475fe38d96ca663fbaac40c5a50420d791f5d5
(cherry picked from commit beacbd368124a656eaa4038fe1c35f1796e5dda4)
Merge "Fixes 3PAR FC driver synchronization" into stable/grizzly