Low: tomcat: use ocf_is_true for catalina_rotate_log parameter.
Low: tomcat: remove bashisms
Low: tomcat: simplify parameter validation
Medium: tomcat: multiple tomcat instances based on CATALINE_BASE

The tomcat document tells that multiple tomcat instances should
be based on CATALINA_BASE.
See RUNNING.txt from the tomcat distribution for the detail.
Medium: tomcat: use root as the default for tomcat_user instead of RUNASIS mode

It is more simple and consistent behavior with jboss RA, and
also eliminates a bug when catalina_rotate_log=YES in RUNASIS mode.

This change should not affect to any cluster configurations because
Pacemaker/lrmd always invoke an RA as root.
Low: ocft: tomcat: add test case for tomcat
Merge pull request #280 from kskmori/tomcat-multiinstance-for-merge

Tomcat multi-instance support based on CATALINA_BASE (revised)