SLIDER-349 updating release POMs for 0.50.2-incubating
Merge branch 'release/slider-0.50.2' into develop

Conflicts:
	app-packages/accumulo/pom.xml
	app-packages/command-logger/application-pkg/pom.xml
	app-packages/command-logger/slider-pkg/pom.xml
	pom.xml
	slider-agent/pom.xml
	slider-assembly/pom.xml
	slider-core/pom.xml
	slider-funtest/pom.xml
	slider-providers/accumulo/accumulo-funtests/pom.xml
	slider-providers/accumulo/slider-accumulo-provider/pom.xml
	slider-providers/hbase/hbase-funtests/pom.xml
	slider-providers/hbase/slider-hbase-provider/pom.xml
SLIDER-349 reverting development POMs to 0.51.0-incubating-SNAPSHOT