Merge changes Idd1bb88c,I9fd5ef99 into topic/schema

* changes:
  Fixed a bug in where condition usage in Update & Delete operations. Also moved Delete operation to a seperate transaction in the Test code to test multiple transactions.
  Commit operation as per Section 5.2.7 of RFC 7047

diff --cc library/src/main/java/org/opendaylight/ovsdb/lib/operations/Update.java
Simple merge