ovs_integration_test: Test transaction with multiple ops and mutations
ovs_integration_test: Test transaction with multiple ops and mutations

Add a simple test that exercises the ability to change the same
column multiple times within a single transaction, using mutations.

Signed-off-by: Flavio Fernandes <e735664e465604dc4cfc5dff971a36a4d5ef0f19@redhat.com>

socketplane/libovsdb