 - travis: handle Grails upgrade command for 2.2.x, 2.3.x and higher versions
 - travis: handle Grails upgrade command for 2.2.x, 2.3.x and higher versions

robertoschwald/grails-audit-logging-plugin,jetgeng/grails-audit-logging-plugin,jetgeng/grails-audit-logging-plugin,dmahapatro/grails-audit-logging-plugin,dmahapatro/grails-audit-logging-plugin,tkvw/grails-audit-logging-plugin