Fix expr for per backend sessions

haproxy_scur{sv="BACKEND"} gives you a sum for FORNTEND
Replace with sum per sv with server type

Regex matches 1st group for:

  ntw01-1
  ntw01
  etc..

sv_new contains clean hostname

Change-Id: Id043fd23ffbae85d56139f3f1eca4a64532547ea
Closes-Bug: PROD-23548
2 files changed