Merge pull request #2022 from thaJeztah/19.03_backport_fix_e2e

[19.03 backport] Disable TLS for e2e docker-in-docker daemon
Upstream-commit: fa0e2597e6e2f4408ffde0c0811d48d8bef1d5f2
Component: cli

Author: kolyshkin

components/cli/e2e/compose-env.yaml

@@ -5,9 +5,11 @@ services:
     image: 'registry:2'
 
   engine:
-      image: 'docker:${TEST_ENGINE_VERSION:-edge-dind}'
+      image: 'docker:${TEST_ENGINE_VERSION:-stable-dind}'
       privileged: true
       command: ['--insecure-registry=registry:5000']
+      environment:
+        - DOCKER_TLS_CERTDIR=
 
   notary-server:
       build: