kyma: kyma-integration-k3d fails regularly

Description The job kyma-integration-k3d fails regularly to connect Commerce Mock to Kyma:

  1) Executing Standard Testsuite:
       CommerceMock Tests:
         CommerceMock test fixture should be ready:
     Error: Error during establishing connection from Commerce Mock to Kyma connector service
500: Internal Server Error: {"error":"Error: connect ECONNREFUSED 127.0.0.1:443"}
      at convertAxiosError (utils/index.js:109:10)
      at connectCommerceMock (test/fixtures/commerce-mock/index.js:538:11)
      at processTicksAndRejections (internal/process/task_queues.js:95:5)
      at async connectMockLocal (test/fixtures/commerce-mock/index.js:500:3)
      at async ensureCommerceMockLocalTestFixture (test/fixtures/commerce-mock/index.js:649:3)
      at async Context.<anonymous> (test/1-commerce-mock.js:51:7)

Examples:

• https://storage.googleapis.com/kyma-prow-logs/logs/kyma-integration-k3d/1500684066305871872/build-log.txt
• https://storage.googleapis.com/kyma-prow-logs/logs/kyma-integration-k3d/1500623667783012352/build-log.txt
• https://storage.googleapis.com/kyma-prow-logs/logs/kyma-integration-k3d/1500276376077340672/build-log.txt