LU-11673 tests: replace obsolete '-o' to '||'

LU-11673 tests: replace obsolete '-o' to '||'

Since use of -o and -a are marked as obsolete in shell
test ([), we need to switch from using [ expr1 –o expr2 ]
to [ expr1] || [ expr2 ].

Make this change for sanity tests.

This is a partial back port of:
Lustre-change: https://review.whamcloud.com/33670
Lustre-commit: 6d277f126df7605d402255333180b0ca03991613

Test-Parameters: trivial
Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: Id87580d0280a716a6939a1203ae5b370e762d6ec
Reviewed-by: Emoly Liu <emoly@whamcloud.com>
Reviewed-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/36929
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>