LU-14184 tests: component-add/del tests for DOM

LU-14184 tests: component-add/del tests for DOM

make duplicates of sanity-pfl 2,3 tests for DOM layout

HPE-bug-id: LUS-8282
Test-parameters: testlist="sanity-pfl/2.* sanity-pfl/3.*"
Signed-off-by: Vitaly Fertman <c17818@cray.com>
Change-Id: If73d7a436b2fc6b6b564cc6eec14ec9e7e4d6937
Reviewed-by: Elena Gryaznova <c17455@cray.com>
Reviewed-by: Vladimir Saveliev <c17830@cray.com>
Tested-by: Elena Gryaznova <c17455@cray.com>
Reviewed-on: https://review.whamcloud.com/40870
Reviewed-by: Mike Pershin <mpershin@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>