fix: "Cluster Deployments Events" dashboard vs "From Management to Regional" case

[denis-ryzhkov]

• From Management to Regional case means:
  metrics, logs, and traces from management cluster are sent to regional cluster.
• "Cluster Deployments Events" dashboard stopped supporting this case
  after PR fix: Prevent regional clusters selection from cluster-deployments-events dashboard #418
  which added /^logs$/ regex matching only GrafanaDatasource named exactly logs as in From Management to Management case.
• That PR tried to fix the issue Prevent regional clusters selection from cluster-deployments-events dashboard #406
  where selecting a regional datasource in this dashboard lead to Status: 500.
• Investigating this error deeper:

  Status: 500. Message: error from datasource: ...
  cannot parse query [
    k8s.namespace.name:~".*"
    | unpack_json from regarding result_prefix "regarding_"
    | unpack_json from metadata result_prefix "metadata_"
    | regarding_kind:*
    | regarding_name:
    | metadata_annotations.generation:*
  ]:
  
  unexpected pipe "regarding_name";
  

• So the | regarding_name: without a value is an invalid query syntax.
• It was caused by the | regarding_name:$cluster_deployment variable expansion.
• Current PR fixes it to be | regarding_name:~"$cluster_deployment"
  unlike | regarding_name:~"^${cluster_deployment}(-md-.*|-cp-.*)?$"
  introduced later in feat: Add cluster filter to Victoria Logs dashboard #382
  because e.g. the valuable informative regarding_kind: ClusterSummary
  has the not matching regarding_name: kof-regional-cluster-capi-$cluster_deployment
  and other kinds may contain the $cluster_deployment name in a different way.
• This also allows to re-enable multi-selection of ClusterDeployments.
• Also porting event.name:* primary filter for performance to 1.1.0.
• Also fixed the issue with folder naming in main:

  kubectl get GrafanaDashboard -n kof cluster-deployment-events -o yaml | yq .status
  
  conditions:
    - message: |-
        Dashboard failed to be applied for 1 out of 1 instances. Errors:
        - kof/grafana-vm: [POST /folders][400] createFolderBadRequest {"message":
        "Folder name cannot be the same as one of its dashboards"}
      reason: ApplyFailed
  

• Fix in release/v1.1.0 branch - c9483e2
• Fix in main - this PR.
• As a result the "From Management to Regional" case, ClusterSummary and other kinds are supported now.

1.1.0:

main:

[gmlexx]

Please back md and cp suffixes in regexp