Prepare command shouldn't start informers

[jspdown]

Feature Request

The prepare command does two things:

• Start informers and wait for them to sync up
• Patch DNS

Proposal

The first step is not necessary and should be removed. The original idea was to check in the prepare command if the right CRDs are in place and that we can fetch resources before starting the controller. If it doesn't, the prepare command would fail. This make no difference compared to the controller failing.

I suggest we remove this check, this would allow a faster start time of the controller, and would allow us to remove the --acl flag from this command.
However, it could still be interesting to check if the right CRDs for SMI are installed, with the right version. But we shouldn't have to start informers for this.

Workarounds

It can be kept like that, it's just not optimal.