CAMEL-6031: DefaultCamelContext should by default fallback and use simple registry if JNDI is not possible. If people explicit configure JNDI then it will still fail as they would expect to keep using JNDI .

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1441785 13f79535-47bb-0310-9956-ffa450edef68