clean.sh updates

* Clean out data, log and state dirs
* Include lib/apache to clear is_apache_enabled_service not found error
* Clean errors removing tgt config files

* Clean errors removing VG backing file in lib/cinder

Change-Id: I33dfde17eb8daaaed7f7e76337fe6a8085a266bf
Merge branch 'info-update' into dt-test
Merge branch 'cleaner' into dt-test
Merge branch 'set-conf-dir' into dt-test
Merge branch 'samples-update' into dt-test