* Create ConsulServiceInstanceList with styling and test
* Implement ConsulServiceInstanceList to Service Detail page
* Implement ConsulExternalSource to Services Show page header
* Update services/show page object
* Update the styling of CompositeRow
* Refactor ConsulServiceList component and styling
* Update ConsulExternalSource to say 'Registered via...'
* Upgrade consul-api-double to patch 2.14.1
* Fix up tests to not use Kind in service models
* Update ListCollection with clickFirstAnchor action
* Add $typo-size-450 to typography base variables
When connect is disabled the discovery-chain endpoint returns a 500
error status, which we previoulsy did not gracefully cope with.
This commit gracefully copes with any errors from the disco-chain
endpoint by supressing the error and hiding the Routing tab from the
Service detail page.
Acceptance test included
* Adds conditional in route to not make discovery-chain request if service kind is equal to `connect-proxy` or `mesh-gateway`
* Adds conditional in template to not show Routing tab if `chain` returns as null
* Creates a new acceptance test to test the Routing tab not being displayed for a service proxy
* Adds `tabs` to the services/show page object
