bug: message and status not being reset on retrigger

[kirederik]

Steps to reproduce

• Apply a promise with a retry or suspend pipeline
• Apply a resource request for that promise
• Observe the resource status

  NAME      MESSAGE             STATUS
  example   Retry again in 2m   Suspended
  

• Unsuspend the resource (or retrigger the pipeline)

Expected
Resource status goes back to "Pending/Pending"

Actual
Resource status stays as "Retry again in 2m/Suspended"

[catmo-syntasso]

This story should be about fixing this with some minor refactor. @ChunyiLyu, @senglezou and @aclevername to facilitate the large refactor around pipeline state management