Ability to change UIDs for static and dynamic dashboards so they do not conflict across multiple Gloo environments about gloo

[kcbabo]

Related: #6536

[kcbabo]

#9016 and #9022 need to be tackled together to solve the overall problem.

[soloio-bot]

Zendesk ticket #3039 has been linked to this issue.

[davidjumani]

Have discussed with @edubonifs and decided that the prefix will apply to the title of the dashboard as well

[davidjumani]

Discussing with @edubonifs and decided that any existing dashboards without the prefix or with a different prefix will need to be manually removed as doing so automatically can cause issues. Eg: If an environment with the dev- prefix has now been modified to stage- and a new environment has been added with the dev- prefix, there is a possibility that the dashboards created by the latter environment will be deleted due to the change in the prefix of former environment.

[davidjumani]

Additional docs PR #9074

[nfuden]

reopening for backports

[davidjumani]

This feature introduces a new observability option dashboardPrefix : Specifies a prefix for the UID and title of all Dashboards managed by edge. This is restricted to 20 characters to allow for the 40 character UID limit of grafana (prefix + generated uid per upstream)

gloo:
  settings:
    observabilityOptions:
      grafanaIntegration:
        dashboardPrefix: "gwp-"

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This will be in v1.17.0-beta1, v1.16.1 and v1.15.12 when released