Karaf 4 Migration

1. The parent of karaf project is changed from karaf-plugin
   to karaf4-plugin.
2. odl-parent aligned to 2.0.2
3. Reorganized features folder according to migration guide
   ( one folder for each feature )
4. Fixed dependencies
   - feature-* dependency migrated to feature4-*
   - dependency removed from features/pom.xml file
5. Fixed test phase by commenting problematic dependencies
6. Corrected the parent of features-tranportpce from features-parent to
single-feature-parent according to
http://docs.opendaylight.org/en/stable-carbon/
developer-guide/odl-parent-developer-guide.html

Change-Id: I7f5fd0caa66d0609f8f1792d46be961ee458c062
Signed-off-by: Shikun Li <jacketshikun@gmail.com>
Signed-off-by: Christophe Betoule <christophe.betoule@orange.com>
Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>