🌱 ClusterCacheTracker: improve error when workload cluster is not reachable

[sbueringer]

Signed-off-by: Stefan Büringer [email protected]

What this PR does / why we need it:
This improves the error when a workload cluster is not reachable.

Before

failed to create remote cluster client: failed to create cluster accessor: error adding index for field "spec.providerID" to cache for remote cluster "default/capi-quickstart": failed to get API group resources: unable to retrieve the complete list of server APIs: v1: client rate limiter Wait returned an error: context deadline exceeded - error from a previous attempt: EOF

After

failed to create remote cluster client: failed to create cluster accessor: error creating client for remote cluster "default/capi-quickstart": error getting rest mapping: failed to get API group resources: unable to retrieve the complete list of server APIs: cluster.x-k8s.io/v1beta1: client rate limiter Wait returned an error: context deadline exceeded - error from a previous attempt: EOF

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[ykakarap]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 98eb21c4d0a5c817e03cc25ca776362cab2f8783

[sbueringer]

Ups. Shouldn't have used the Cluster CRD with wl clusters :D

[killianmuldoon]

Looking better now!

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 24e398b48a587b01bce18ba9606db856d2cab709

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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