Test LogFeeder Fix of NullPointerException after logfile roll over

Install:

• stop logfeeder
• -move /usr/lib/ambari-logsearch-logfeeder/libs/ambari-logsearch-logfeeder-.jar to a backup path
• download https://github.com/kasakrisz/ambari/releases/download/logfeeder-npe-fix-v0.1-beta/ambari-logsearch-logfeeder-2.7.3.0.0-v2.jar and copy into /usr/lib/ambari-logsearch-logfeeder/libs/
• start logfeeder