fix error 500 at tsm.(intranet.)ufz.de/sta/

Currently, https://tsm.intranet.ufz.de/sta/ and https://tsm.ufz.de/sta/ throw Error 500.

This is the case, because the index.jsp that provides the list of Frost Instances at tomcat/sta url is owned by root. To solve this, the file is copied into $CATALINA_HOME/webapps/ROOT/ before changing the owner of $CATALINA_HOME to tomcat.

This way, the owner of the file is user tomcat and everything should as expected

requested review from @luca-johannes.nendel

assigned to @joost.hemmen1

approved this merge request

merged

mentioned in commit 981a5ad1