LU-5610 tests: Handle quoted module options

LU-5610 tests: Handle quoted module options

When test-framework.sh translates module options to environment
variables for remote nodes, quotes sould be escaped to the subshell.

Signed-off-by: Stephen Champion <schamp@sgi.com>
Change-Id: I937cc28b96b54ea75082c7d8789c762b4db16c5f
Reviewed-on: http://review.whamcloud.com/11887
Tested-by: Jenkins
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>