LU-14472 tests: modify version_code in sanity test

LU-14472 tests: modify version_code in sanity test

Modify version_code in sanity-quota.sh and sanity-sec.sh according to
DDN version.  There is no need to modify version_code on other branch.

The version_code in test_59c() and test_49 of in sanity-sec.sh was
changed to 2.14.0.50 according to Sébastien's suggestion.

Signed-off-by: Xing Huang <hxing@ddn.com>
Change-Id: Ie448cbf60f6bdacdbba39ab0a1a86c6953d51ecb
Reviewed-on: https://review.whamcloud.com/48282
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>