check_es_system

This version 1.11.1 fixes two bugs.

• Invalid authentication is not properly handled and did not result in correct plugin behaviour (output and exit code) on the check types readonly, master and tps

• Invalid domains submitted by -H parameter were not properly handled and resulted in the plugin to simply return OK (exit code 0) when a HTTP status 200 came back as a response.

This fixes #30

• Set jq as new default json parser (was: jshon)
• Plugin now shows the names of the found read_only indexes when using jq as json parser

Bugfix in jthreads check type. See #34 .