Add NoCleanIfFailure option to SingleFeatureTest
This will as shown much clearer errors in case of SFT failures; e.g.
"java.lang.IllegalStateException: Can't install
feature odl-integration-compatible-with-all/0.5.0-SNAPSHOT:
Could not start bundle mvn:org.opendaylight.snmp4sdn/snmp4sdn/0.4.0-SNAPSHOT
in feature(s) odl-snmp4sdn-snmp4sdn-0.4.0-SNAPSHOT: The bundle
"org.opendaylight.snmp4sdn_0.4.0.SNAPSHOT [504]" could not be resolved.
Reason: Missing Constraint: Import-Package: org.opendaylight.controller.sal.packet; version="[0.7.0,1.0.0)""
as shown on https://lists.opendaylight.org/pipermail/odlparent-dev/2016-July/000467.html
Change-Id: I5b5df8807e87c76975598a0f3311010b781227c6
Signed-off-by: Yakir Dorani <yakir.dorani@hpe.com>