High: fs-lib.sh: Removes usage of fuser -kvm from fs-lib.sh based agents.

This resolves issue with fuser blocking netfs mounts.

Resolves: rhbz#1014298
High: tomcat-s.sh: Do not fail on stop if config validation fails.

Resolves: rhbz#983273
High: tomcat-6.sh: Fixes setting TOMCAT_USER correctly

Resolves: rhbz#981717
Merge pull request #324 from davidvossel/netfs_fixes

rgmanager tomcat-6 and netfs agent fixes