Adding ovssfc renderer feature

1) Feature Tests Pass: https://jenkins.opendaylight.org/ovsdb/job/ovsdb-merge/306/org.opendaylight.ovsdb$features-ovs-sfc/testReport/
2) Features Comply with Guidelines: https://git.opendaylight.org/gerrit/gitweb?p=ovsdb.git;a=blob;f=features/ovs-sfc/src/main/resources/features.xml;h=fe1394b4c0a0147e38681d5cf4b478d293ee2ae8;hb=refs/heads/master
	a) Feature Names: Prefixed with 'odl-' : https://wiki.opendaylight.org/view/Runtime:Karaf_Features_Guidelines#Feature_Naming
	b) Features Descriptions: Present https://wiki.opendaylight.org/view/Runtime:Karaf_Features_Guidelines#Description
	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-ovsdb-ovssfc
4) Integration Test Impact: none

Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>
Merge "Adding ovssfc renderer feature"