core: Add common methods for runtime log4j setup

Adds Log4jUtils class which contains methods for runtime log4j setup
used in engine-config and engine-manage-domains.

Change-Id: Ic00ea0af643e8c978fd67eb8c56e2329d43e776d
Bug-Url: https://bugzilla.redhat.com/1063901
Bug-Url: https://bugzilla.redhat.com/1083411
Signed-off-by: Martin Perina <mperina@redhat.com>
tools: Remove EngineConfigCLIParser instance variable from EngineConfig

Removes EngineConfigCLIParser instance variable from EngineConfig since
it's needed only in EngineConfig.setUpAndExecute() method.

Change-Id: I1390755096670c7ed21882a487280d85426e576f
Bug-Url: https://bugzilla.redhat.com/1063901
Signed-off-by: Martin Perina <mperina@redhat.com>
tools: Remove debug log when parsing args in engine-config

Removes debug log messages when parsing args in engine-config. This is
needed to enable logging setup that uses command line arguments.

Change-Id: I3b549b8216c3e1af2cf167fac978673c9528894d
Bug-Url: https://bugzilla.redhat.com/1063901
Signed-off-by: Martin Perina <mperina@redhat.com>
tools: Remove logging when parsing args in engine-manage-domains

Removes log messages when parsing args in engine-manage-domains.
This is needed to enable logging setup that uses command line
arguments.

Change-Id: I3b1c5e76e6dbd2bc2c3d49abac03e10d4dc6faf6
Bug-Url: https://bugzilla.redhat.com/1083411
Signed-off-by: Martin Perina <mperina@redhat.com>