LU-14826 tests: fix sanityn.sh test_102 version check

LU-14826 tests: fix sanityn.sh test_102 version check

The MDS version check in test_102 had a syntax error, found
by 'shellcheck'.

Also quiet spurios error messages from check_fhandle_syscalls
if the "lctl" binary cannot be found.

Fixes: cbc62b0b829 ("LU-14826 mdt: getattr_name("..") under striped directory")
Test-Parameters: trivial testlist=sanityn mdscount=2 mdtcount=4 env=ONLY=102,ONLY_REPEAT=100
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: Iee432bc147f63809fea095c4ce9e1694f7ce7057
Reviewed-on: https://review.whamcloud.com/46693
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>