Fix Major Sonar Issues: SouthboundEvent.java.

Fixes the following issues:
- Removed semi-colon to fix empty statement error
- 12 Avoid using If/If else/For statements without curly braces

https://sonar.opendaylight.org/component#component=org.opendaylight.ovsdb:openstack.net-virt:master:src/main/java/org/opendaylight/ovsdb/openstack/netvirt/SouthboundEvent.java

Change-Id: Ic3adee50ec4a3f6f0d48c3d8330cfde9654d423f
Signed-off-by: Marcus Koontz <marcus.g.koontz@intel.com>
Fix Critcal Sonar Issue: ConfigurationServiceImpl.java.

Fixes the following issues:
- Use a logger to log this exception.

https://sonar.opendaylight.org/component/index#component=org.opendaylight.ovsdb%3Aplugin%3Amaster%3Asrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fovsdb%2Fplugin%2Fimpl%2FConfigurationServiceImpl.java&settings=issues&blocks=959%2C967&tab=issues&item=.js-filter-CRITICAL-issues

Change-Id: I37465b04134122d932d48ea26655057bbf5ea3ca
Signed-off-by: Marcus Koontz <marcus.g.koontz@intel.com>