Don't mix t.Parallel() wth environment.ProtectAll()

`testEnv` is a package-level variable, so protecting / restoring
`testEnv` in parallel will result in "concurrent map write" errors.

This patch removes `t.Parallel()` from tests that use this
functionality (through `defer setupTest(t)()`).

Note that _subtests_ can still be run in parallel, as the defer
will be called after all subtests have completed.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 4d88a95d6730383624570f8730aa203a56caadc3)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 05ecb140c4f3c4c7cbb860baa425104fa6f132ea
Component: engine

components/engine/integration/build/build_test.go

@@ -25,7 +25,7 @@ import (
 func TestBuildWithRemoveAndForceRemove(t *testing.T) {
 	skip.If(t, testEnv.DaemonInfo.OSType == "windows", "FIXME")
 	defer setupTest(t)()
-	t.Parallel()
+
 	cases := []struct {
 		name                           string
 		dockerfile                     string

components/engine/integration/container/update_linux_test.go

@@ -67,8 +67,6 @@ func TestUpdateMemory(t *testing.T) {
 }
 
 func TestUpdateCPUQuota(t *testing.T) {
-	t.Parallel()
-
 	defer setupTest(t)()
 	client := request.NewAPIClient(t)
 	ctx := context.Background()