LU-10980 test: correct the version code check in sanityn.sh

LU-10980 test: correct the version code check in sanityn.sh

The following patch was landed to 2.11.50 instead of 2.10.58, so
the version code check in sanityn.sh test_77ja should be corrected:
- Lustre-commit: e0cdde123c14729a340cf937cf9580be7c9dd9c1
- Lustre-change: https://review.whamcloud.com/27608

Test-Parameters: trivial testlist=sanityn envdefinitions=ONLY=77ja \
serverjob=lustre-b2_11 serverbuildno=2

Change-Id: I619d5fd6fa2297663084d3b5b8bdbc1b4642cdc1
Signed-off-by: Emoly Liu <emoly.liu@intel.com>
Reviewed-on: https://review.whamcloud.com/32239
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Yingjin Qian <qian@ddn.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>