Adding RuleBaseReader for rules defined in JSON format.

Motivation:
The ProxyServlet class provides the abstract loadRuleBase method in
which concrete implmentation can define the proxy rules. Currently
subclasses can use the Java DSL, or whatever way they chose to read the
rules and make them available. This pull request provides support for
defining rules in JSON format.

Modifications:
* Added a dependency to com.fasterxml.jackson.core:jackson-databind.
* Added RuleBaseReader.
fix child container service XML
#568: Added documentation to fabric-cxf-demo.
#568: Added documentation to fabric-cxf-demo.
#568: Fixed partly to deploy cxf demo server.
#1421: ZookeeperGroup allow to retrive last state, and also force a refresh so clients can be up to date when creating clients. Fixed CXF Demo so the client works.
#568: CXF demo readme. Installing the CXF server fails to provision sometimes in Karaf (CXF/Jetty/Spring/bundle refresh crap)
fixes #1432 allow the process child container to deploy wars/jars into a process container
 #1432 have a separate stand alone tomcat container along with the tomcat+fabric8 agent container
fix bad mvn coords of the brms distro
 #1432 use dynamic ports so we can run multiple tomcats as child containers on a box
 #1432 minor refactor so we can default versions to a sensible default if a profile does not inherit from the base versions profile