EX-3738 hotpools: Strict ordering of client and lamigo

EX-3738 hotpools: Strict ordering of client and lamigo

Ensure strict ordering for start and stop of client mount
and lamigo/lpurge.
Ensure enough of a timeout for start and stop.

Test-Parameters: trivial
Signed-off-by: Nathaniel Clark <nclark@whamcloud.com>
Change-Id: I7c50abc5ff82f0cc3fd117fd961f7421ad2df9be
Reviewed-on: https://review.whamcloud.com/44807
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Gaurang Tapase <gtapase@ddn.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>