Fix parseAPI not working with non-"namespaces" pathnames. (#450)

* fix parseApi not accepting versions that don't start with 'v'
* add unit tests

Signed-off-by: Sebastian Malton <smalton@mirantis.com>
Co-authored-by: Sebastian Malton <smalton@mirantis.com>

src/main/prometheus/lens.ts

@@ -18,7 +18,7 @@ export class PrometheusLens implements PrometheusProvider {
         port: service.spec.ports[0].port
       }
     } catch(error) {
-      logger.warn(`PrometheusLens: failed to list services: ${error.toString()}`)
+      logger.warn(`PrometheusLens: failed to list services: ${error.response.body.message}`)
     }
   }