Adding nemo features.

Adding nemo features.

1) Feature Tests Pass: http://jenkins.opendaylight.org/releng/view/nemo/job/nemo-merge-beryllium/3/
2) Features Comply with Guidelines: https://git.opendaylight.org/gerrit/gitweb?p=nemo.git;a=blob;f=nemo-features/src/main/features/features.xml;
	a) Feature Names: odl-nemo-engine-ui
	b) Features Descriptions: Present
	c) Features Start-Levels: No start-levels on <bundle> elements or <feature> elements
3) Features Tested: Features have been tested for functionality with
	a) feature:install odl-restconf-all odl-mdsal-apidocs odl-nemo-engine-ui
	b) feature:install odl-integration-compatible-with-all
4) Integration Test Impact: None

Change-Id: If4c6f6417cf73634be3b9c9676b362f432ea0ff8
Signed-off-by: A H <an.ho@huawei.com>