update pom.xml files with clouddocs-maven-plugin version 1.12.2

Change-Id: I5d4633bd53697deafe5c2348d581b81186e6ab1c
author: diane fleming
Fix asserttion of types

Some code in tests is uisng assertTrue(isinstance(A, B))
or assertEqual(B, type(A)). assertIsInstance must be used instead.

assertIsInstance is provided by testtools package, so this change is not
breaking backward compatibility with Python 2.6.

Closes-Bug: #1259941

Change-Id: Ib601aebabc0ff0318cd87cc199c808e6b59f7c9f
Merge "Fix asserttion of types"
Merge "update pom.xml files with clouddocs-maven-plugin version 1.12.2"