[OpenSIPS-Devel] [OpenSIPS/opensips] 0f98f4: prometheus: add a prefix to the statistics' names

[Răzvan Crainea]

  Branch: refs/heads/master
  Home:   https://github.com/OpenSIPS/opensips
  Commit: 0f98f489cfc55b3ca90fd4b73e106e670605f939
      https://github.com/OpenSIPS/opensips/commit/0f98f489cfc55b3ca90fd4b73e106e670605f939
  Author: Razvan Crainea <razvan at opensips.org>
  Date:   2021-03-19 (Fri, 19 Mar 2021)

  Changed paths:
    M modules/prometheus/doc/prometheus_admin.xml
    M modules/prometheus/prometheus.c

  Log Message:
  -----------
  prometheus: add a prefix to the statistics' names

Also allow customization of the statistics group prefix
Credits go to Ovidiu Sas (@ovidiusas) for brainstorming and opening the
feature request. Close #2427