EX-5366 test: handle missing lpcc.conf in test_210

EX-5366 test: handle missing lpcc.conf in test_210

Handle missing /etc/lpcc.conf in sanity-pcc test_210

Signed-off-by: Lei Feng <flei@whamcloud.com>
Test-Parameters: trivial clientdistro=sles15sp3 testlist=sanity-pcc env=ONLY=210
Test-Parameters: clientdistro=el8.6 clientarch=aarch64 testlist=sanity-pcc env=ONLY=210
Change-Id: Ia19c32ac2719a52ee880a2e633495b9ce3bb9534
Reviewed-on: https://review.whamcloud.com/47728
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>