Make the pkill not fail when no fuse-nfs processes are present [#138463079][(https://www.pivotaltracker.com/story/show/138463079)
Make the pkill not fail when no fuse-nfs processes are present
[#138463079][(https://www.pivotaltracker.com/story/show/138463079)

Signed-off-by: Jeffrey Pak <9d750c79dc1952140f693c4bda214b11dba3d64d@emc.com>

cloudfoundry-incubator/nfs-volume-release,cloudfoundry-incubator/nfs-volume-release,cloudfoundry-incubator/nfs-volume-release