Merge pull request #171 from thaJeztah/18.09_backport_fix_build_session_test

[18.09 backport] Fix TestBuildWithSession, TestBuildSquashParent  using wrong daemon during test

integration/build/build_session_test.go

@@ -27,7 +27,7 @@ func TestBuildWithSession(t *testing.T) {
 	d.StartWithBusybox(t)
 	defer d.Stop(t)
 
-	client := testEnv.APIClient()
+	client := d.NewClientT(t)
 
 	dockerfile := `
 		FROM busybox

integration/build/build_squash_test.go

@@ -26,7 +26,7 @@ func TestBuildSquashParent(t *testing.T) {
 	d.StartWithBusybox(t)
 	defer d.Stop(t)
 
-	client := testEnv.APIClient()
+	client := d.NewClientT(t)
 
 	dockerfile := `
 		FROM busybox