test(orchestrator): add OrchestratorClient unit tests (#1640)

* Add unit tests for UrlUtils

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for executeWorkflow

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for abortWorkflow

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for getWorkflowDefinition

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for getWorkflowSource

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for listWorkflowOverviews

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for listInstances

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for getInstance

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for getWorkflowDataInputSchema

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for getWorkflowOverview

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

* Add unit tests for retriggerInstanceInError

Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>

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Signed-off-by: Gloria Ciavarrini <gciavarrini@redhat.com>