Pass auth token on Scylla Manager cluster update

[rzetelskik]

Description of your changes: There is a bug in our Scylla Manager integration where the controller checks for auth token mismatch and issues an update request to Scylla Manager, but it doesn't set said auth token parameter. This PR sets the auth token parameter.

Which issue is resolved by this Pull Request:
Resolves #1799

/kind bug
/priority important-longterm
/cc zimnx

[zimnx]

Good catch!
/lgtm

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[tnozicka]

@rzetelskik what the fallout from this? do we need it in v1.12? how did it work without the token?

[rzetelskik]

what the fallout from this?

In theory that could cause the controller to keep sending update requests to the manager server

do we need it in v1.12? how did it work without the token?

It didn't, but I suppose you'd only hit it if you lost the secret or manually deleted it. In that case you could manually fix it by deleting the cluster from manager and letting the controller sync again. It's better to backport it imo.