Add email receiver errors chart
Adds error rate for email receiver errors to certify dashboard
https://dashboards.gitlab.net/dashboard/snapshot/S0P0aMYki24h0FTLvG0ZwtUL8AZTmn4L?orgId=1
Edited by Sean McGivern
Adds error rate for email receiver errors to certify dashboard
https://dashboards.gitlab.net/dashboard/snapshot/S0P0aMYki24h0FTLvG0ZwtUL8AZTmn4L?orgId=1