Correct java path
This version fixes:
# /opt/tomcat/bin/catalina.sh run
Using CATALINA_BASE: /opt/tomcat
Using CATALINA_HOME: /opt/tomcat
Using CATALINA_TMPDIR: /opt/tomcat/temp
Using JRE_HOME: /usr/bin/java
Using CLASSPATH: /opt/tomcat/bin/bootstrap.jar:/opt/tomcat/bin/tomcat-juli.jar
/opt/tomcat/bin/catalina.sh: line 402: /usr/bin/java/bin/java: Not a directory
/opt/tomcat/bin/catalina.sh: line 402: exec: /usr/bin/java/bin/java: cannot execute: Not a directory