Add an option to bootstrap database service to teleport discovery boostrap

[greedy52]

Implements #27737

UX:

$ teleport discovery bootstrap --attach-to-role <discovery-service-role> --database-service-role <database-service-role> 

Reading configuration at "teleport.yaml"...

Configure AWS for Discovery Service
1. Create IAM Policy "<discovery-service-policy-name>":
...

2. Create IAM Policy "<discovery-service-policy-name>Boundary":
...

3. Attach IAM policies to "<discovery-service-role>".

Configure AWS for Database Service
1. Create IAM Policy "<database-service-polcy-name>":
...

2. Create IAM Policy "<database-service-polcy-name>Boundary":
...

3. Attach IAM policies to "<database-service-role>".

Confirm? [y/N]: y
✅[AWS] Create IAM Policy "<discovery-service-policy-name>"... done.
✅[AWS] Create IAM Policy "<discovery-service-policy-name>Boundary"... done.
✅[AWS] Attach IAM policies to "<discovery-service-role>"... done.
✅[AWS] Create IAM Policy <database-service-polcy-name>"... done.
✅[AWS] Create IAM Policy "<database-service-polcy-name>Boundary"... done.
✅[AWS] Attach IAM policies to "<database-service-role>"... done.

[GavinFrazar]

mostly LGTM, even if you don't refactor to use an enum. The logic works so i'm approving

[ibeckermayer]

LGTM but somebody with more database experience (@smallinsky) should take a final pass

[public-teleport-github-review-bot]

@greedy52 See the table below for backport results.

Branch	Result
branch/v13	Create PR