Container startup scripts to check for tomee mounted files and move them to tomcat

Moving from TomEE to Tomcat, the container directory will be different. It may not be common, but some installations may be mounting files into /opt/tomee. On startup, the init scripts should check for mounted files there, give a warning that it's deprecated, and copy them to /opt/tomcat. There should be a new environment variable to skip the check copy, in case there is some reason they would want them to stay in /opt/tomee.