LU-5142 tests: add version check codes to conf-sanity test 43

LU-5142 tests: add version check codes to conf-sanity test 43

This patch adds Lustre version check codes into conf-sanity test
43 to make the test interoperate with servers that do not have
the following changes:

Lustre-commit: 3064318df90ce7019b83c8a7f80e93a9634c00fa
Lustre-change: http://review.whamcloud.com/5700
Lustre-commit: 917b0a17d4e50db9f966763925a2dc860d932a3b
Lustre-change: http://review.whamcloud.com/9221

Test-Parameters: alwaysuploadlogs envdefinitions=ONLY=43 \
ossjob=lustre-b2_4 mdsjob=lustre-b2_4 ossbuildno=73 mdsbuildno=73 \
testlist=conf-sanity

Signed-off-by: Jian Yu <jian.yu@intel.com>
Change-Id: I7e12038cc8f77d3a9dbe19806133c21580bfd484
Reviewed-on: http://review.whamcloud.com/12911
Tested-by: Jenkins
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>