PluginsManagerCMD.sh parsing issue

[vchepkov]

jmeter plugin provider fails once in a while. I caught output, when it happens :

2018-10-24 06:16:20,798 INFO o.j.r.PluginManagerCMD: Command is: status
2018-10-24 06:16:20,857 INFO o.j.r.JARSourceHTTP: Found cached repo
2018-10-24 06:16:20,990 INFO o.j.r.PluginManager: Plugins Status: [jpgc-graphs-basic=2.0, jpgc-graphs-additional=2.0, jpgc-graphs-composite=2.0, jpgc-graphs-dist=2.0, jpgc-graphs-vs=2.0, jpgc-plugins-manager=1.3, jmeter-core=4.0, jmeter-ftp=4.0, jmeter-http=4.0, jmeter-jdbc=4.0, jmeter-jms=4.0, jmeter-junit=4.0, jmeter-java=4.0, jmeter-ldap=4.0, jmeter-mail=4.0, jmeter-mongodb=4.0, jmeter-native=4.0, jmeter-tcp=4.0, jmeter-components=4.0]
[jpgc-graphs-basic=2.0, jpgc-graphs-additional=2.0, jpgc-graphs-composite=2.0, jpgc-graphs-dist=2.0, jpgc-graphs-vs=2.0, jpgc-plugins-manager=1.3, jmeter-core=4.0, jmeter-ftp=4.0, jmeter-http=4.0, jmeter-jdbc=4.0, jmeter-jms=4.0, jmeter-junit=4.0, jmeter-java=4.0, jmeter-ldap=4.0, jmeter-mail=4.0, jmeter-mongodb=4.0, jmeter-native=4.0, jmeter-tcp=4.0, jmeter-components=4.0]
2018-10-24 06:16:21,007 Thread-3 WARN Unable to register Log4j shutdown hook because JVM is shutting down. Using SimpleLogger

Provider expects last line to be the module list and fails here. As a workaround I have modified PluginsManagerCMD.sh to 'grep' only strings which starts with ^, but I think provider should do it.