Moved the code to normalize the java objects (Set and Map) to OVSDB json friendly format into ColumnSchema class

Change-Id: Ia04cdc74dd5733df187ea1e7a9b99952f9566a3d
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>
Fixed the broken Typed IT tests & included it to run as part of failsafe maven plugin.

Change-Id: I269c200646b83c336b253d2dfa9a089e0e0595eb
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>