Unexpected/outdated phc2sys related metrics are showing up in ptp metrics after modifying ptpconfigs. phc2sys can be associated to a different ptp4l config after ptpconfig change.

Both old and new phc2sys metrics show up in ptp metrics, with the old metrics showing up with process status down, etc. 

The metrics for old phc2sys should not show up in ptp metrics.  

4.12

100% (after phc2sys moves from one ptp4l config to another)

1. Configure at least 2 ptp profiles
2. Modify ptpconfigs to change ptp thresholds 
3. Observe that phc2sys process got restarted and moved from one ptpconfig (ptp4l.4.config) to another one (ptp4l.1.config). 
4. Check ptp metrics

old phc2sys metics associated with ptp4l.4.config remains in ptp metrics.

# HELP openshift_ptp_offset_ns 
# TYPE openshift_ptp_offset_ns gauge
openshift_ptp_offset_ns{from="master",iface="enp49s0fx",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_offset_ns{from="master",iface="ens4fx",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} -11
openshift_ptp_offset_ns{from="master",iface="ens5fx",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} -5
openshift_ptp_offset_ns{from="master",iface="ens7fx",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_offset_ns{from="phc",iface="CLOCK_REALTIME",node="helix49.ptp.lab.eng.bos.redhat.com",process="phc2sys"} -10
# HELP openshift_ptp_process_restart_count 
# TYPE openshift_ptp_process_restart_count counter
openshift_ptp_process_restart_count{config="ptp4l.0.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_process_restart_count{config="ptp4l.1.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="phc2sys"} 1
openshift_ptp_process_restart_count{config="ptp4l.1.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_process_restart_count{config="ptp4l.2.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_process_restart_count{config="ptp4l.3.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_process_restart_count{config="ptp4l.4.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="phc2sys"} 2
openshift_ptp_process_restart_count{config="ptp4l.4.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
openshift_ptp_process_restart_count{config="ptp4l.5.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 3
# HELP openshift_ptp_process_status 0 = DOWN, 1 = UP
# TYPE openshift_ptp_process_status gauge
openshift_ptp_process_status{config="ptp4l.0.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_process_status{config="ptp4l.1.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="phc2sys"} 1
openshift_ptp_process_status{config="ptp4l.1.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_process_status{config="ptp4l.2.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_process_status{config="ptp4l.3.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_process_status{config="ptp4l.4.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="phc2sys"} 0
openshift_ptp_process_status{config="ptp4l.4.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1
openshift_ptp_process_status{config="ptp4l.5.config",node="helix49.ptp.lab.eng.bos.redhat.com",process="ptp4l"} 1

old phc2sys metics associated with ptp4l.4.config should not appear in ptp metrics.

Workaround: restart ptp linux daemon pod will put the metrics back to a clean state.