Introducing Open_vSwitch Typed Schema wrapper on top of the Schema indepedent Library.

Adding Bridge & OpenVSwitch Tables along with IT for these 2 tables.
These tables are refactored from the old plugin and hence not all Columns are statically Typed yet.
Those will be added gradually based on usage pattern.

More OpenVSwitch tables will be added soon.

Change-Id: I1d253df432937281f2303d015cc85c3e91da8b22
Signed-off-by: Madhu Venugopal <mavenugo@gmail.com>
Merge "Introducing Open_vSwitch Typed Schema wrapper on top of the Schema indepedent Library." into topic/schema