LU-589 auster: Export 'CONFIG' environment variable.

LU-589 auster: Export 'CONFIG' environment variable.

The 'CONFIG' variable defines the accsm configuration file. This
variable needs to be exported so that test-suite scripts use the
appropriate accsm configuration.

Change-Id: Ia0fdb4014d6eeefc3e08dced3d843427756c8587
Signed-off-by: Chris Horn <hornc@cray.com>
Reviewed-on: http://review.whamcloud.com/2051
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>