tools: Adds helpers to configure java logging in tools

1) Adds helper classes to configure java.util.logging in tools using
   command line parameters
2) Adds tools-logging.properties with default logging configuration for
   tools
3) Adds OVIRT_LOGGING_PROPERTIES environment variable which can be set
   by user to provide custom logging configuration

Change-Id: Ie1c46ca552888b347a4ff810003e0fcc818f832f
Bug-Url: https://bugzilla.redhat.com/1109871
Signed-off-by: Martin Perina <mperina@redhat.com>