Skip camel-mqtt tests on OS with sparc CPUs

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1455975 13f79535-47bb-0310-9956-ffa450edef68
Allow xmljson strees test to run longer on slow CI servers

git-svn-id: https://svn.apache.org/repos/asf/camel/trunk@1455999 13f79535-47bb-0310-9956-ffa450edef68