feat(kiali): include Kiali external URL as a parameter

[josunect]

    kiali:
      # Required. Kiali endpoint
      url: ${KIALI_BASE_URL}
      # Optional. Kiali public URL to redirect to standalone Kiali. When not specified, url will be used.
      urlExternal: ''

This URL is also displayed in the about window, it can be used to verify:

• Added some test coverage for resources card.

[aljesusg]

LGFM

[openshift-ci]

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