Nuxeo Java Client 3.9.0

This release contains the following:

Bug

• JAVACLIENT-192 - Don't use dots in custom HTTP headers
• JAVACLIENT-211 - Encode parentPath in createDocumentByPath method

Improvement

• JAVACLIENT-213 - Add String primitive JSON parsing to Java client

Clean ups

• JAVACLIENT-214 - Fix integration tests on workflow since their creation is more restrictive
• JAVACLIENT-215 - Upgrade the Nuxeo 11.x version for tests