Invalid perfdata output for `pmp-check-mysql-status`

[basg]

pmp-check-mysql-status seems to incorporate invalid performance data in it's output. This yields errors in processing the plugin's output in monitoring systems such as Icinga, as shown below, performance data, according to nagios guidelines, may not contain strings:

Ignoring invalid perfdata value: wsrep_local_state_comment=Synced;Synced;;0;

I found a pull-request that addresses this issue, but it seems to be inactive at the moment. https://github.com/percona/percona-monitoring-plugins/pull/38

This issue could be circumvented by allowing an option to omit performance data, or by allowing an option to incorporate some nagios-compliant values in performancedata.