core: DbFacadeUtils basic Java cleanup

Some basic Java cleanup - removed useless commit message, added braces,
and replaced FQCN with import.

Change-Id: I55f89c0684ca67813c6cdfde1c3a938368c13a88
Signed-off-by: Allon Mureinik <amureini@redhat.com>
core: Clean up exception in AuditLogDirectorTest

Fixed an Exception being printed in AuditLgDirectorTest, caused by the
underlying AuditLogableBase trying to access DbFacade.

Change-Id: I4ad2abc7c83bf199fc12d35a857cc44322cce0aa
Signed-off-by: Allon Mureinik <amureini@redhat.com>
core: Fix NPE in AuditLogableBaseTest

AuditLogableBaseTest would print an annoying NullPointerException
stacktrace due to getVm() trying to access VmNetworkInterfaceDao in
getVm().

This patch adds a mock for that DAO (with no additional behavior, as to
not change the test's semantics) to avoid this annoying output.

Change-Id: I24940142c12e0259544f3e3cb8bc8bd8ca2c2cfa
Signed-off-by: Allon Mureinik <amureini@redhat.com>