[Mirt0x]

Description of your changes

• Added Secret watches to Role controllers so Roles referencing a password Secret are enqueued when that Secret changes. See the namespaced and cluster Role controllers.
• Extracted the mapping logic into helpers namespacedSecretMapper and clusterSecretMapper that list Roles and return reconcile requests for Roles whose PasswordSecretRef matches the Secret.
• Added unit tests for the mapper behavior (including tests that exercise Secret-data changes).
• Ran formatting on modified files.

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable to ensure this PR is ready for review.

How has this code been tested

• go test ./pkg/controller/namespaced/postgresql/role ./pkg/controller/cluster/postgresql/role
  both packages passed locally
• make reviewable

](https://git.io/fj2m9)

[fernandezcuesta]

Related: #348

[Mirt0x]

hey @fernandezcuesta,
I see you opened #470
Should we close this then?

[fernandezcuesta]

Hi @Mirt0x, I didnt realize this one was already here.
If you want, feel free to take what I did in #470 and combine it here (or just cherrypick) and I'll review it.

[Mirt0x]

Hey @fernandezcuesta,
As far as I can tell, what you did in #470 is way more extensive than what I did here so this one adds no functionality. So unless there is a specific aspect you’d like me to have rebased and combined, I’d just go ahead and close my PR. Feel free to comment and I’ll reopen and combine.