LU-16861 obdfilter: Exclude quotes when getting NIDs

LU-16861 obdfilter: Exclude quotes when getting NIDs

In get_targets(), when getting NIDs the quotes were also included.
Exclude quotes when generating NIDs as they are not required.

Use $LCTL instead of $lctl, and make it also work in Janitor testing.

Lustre-change: https://review.whamcloud.com/53620
Lustre-commit: c265e1c7b045bf1f9e5b2919c282b63086929ab6

Test-Parameters: trivial testlist=obdfilter-survey
Fixes: 9ef9906d7 ("LU-6863 tests: change obdfilter-survey.sh for CLIENTONLY mode")
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I8642539fc6b396f1339e20e4fef8bc78cda2d969
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/55090
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>