Activity metrics shows identical value

[szaluzhskiy]

Hello team!

I've noticed that graphs of next metrics on Activity shows are almost same value in case of Activity attempt failure:

• cadence-activity-execution-failed
• cadence-activity-task-failed

I propose to rethink location of metrics in code, let them increment in another cases.

From my point of view metric cadence-activity-execution-failed should be incremented in case of activity failed after all attempts are failed. Metric cadence-activity-task-failed incremented if one attempt of activity execution, on every retry step, failed

[meiliang86]

Good suggestion.