HYD-4485 Work around TEI-3576
HYD-4485 Work around TEI-3576

In SSI testing the $MEASURE_COVERAGE can be mis-set. This causes
coverage testing to be enabled which is an incorrect outcome.

To help debug this issue we will detect that it has been incorrectly
set and send an email to brian.murrel@intel.com. The $MEASURE_COVERAGE
variable will then be correctly set to false

 - Update the defaults.sh script to detect and report a misconfigured
   $MEASURE_COVERAGE variable.

Signed-off-by: Brian J. Murrell <2a8f564cbb80211e19c0a14fed38a451599c042f@intel.com>
Change-Id: I919a5848e9731cc5ad76298d7bcba4c28ffb5a8b
Reviewed-on: http://review.whamcloud.com/15135
Tested-by: Jenkins
Tested-by: Chroma Test User <a0b98b2ff5154776fa24760ef410655af7a8b56c@intel.com>
Reviewed-by: Mathieu Drapeau <a324b19503686854f7a766ede3f1a9958f5061d4@intel.com>
Reviewed-by: Joe Grund <5a0004131f5af71cc30270f318d2c30ba7aaa99a@intel.com>
(cherry picked from commit f05bc6111535cf41c689dd26a858ee4b177fad32)
Reviewed-on: http://review.whamcloud.com/15850
Reviewed-by: Chris Gearing <149a3c4298d99c315fc555357d57d2940923ba5f@intel.com>

intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre,intel-hpdd/intel-manager-for-lustre