Make lots of tests run in parallel

Putting t.Parallel() in each test makes them run in parallel.
Additional t.Parallel() could be added to each subtest, although
that requires making a local copy of the loop variable for
table driven tests.

Test: m checkbuild
Change-Id: I5d9869ead441093f4d7c5757f2447385333a95a4
diff --git a/ui/logger/logger_test.go b/ui/logger/logger_test.go
index 044e6f0..7b3791c 100644
--- a/ui/logger/logger_test.go
+++ b/ui/logger/logger_test.go
@@ -29,6 +29,7 @@
 )
 
 func TestCreateFileWithRotation(t *testing.T) {
+	t.Parallel()
 	dir, err := ioutil.TempDir("", "test-rotation")
 	if err != nil {
 		t.Fatalf("Failed to get TempDir: %v", err)
@@ -96,6 +97,7 @@
 }
 
 func TestPanic(t *testing.T) {
+	t.Parallel()
 	if os.Getenv("ACTUALLY_PANIC") == "1" {
 		panicValue := "foo"
 		log := New(&bytes.Buffer{})
@@ -128,6 +130,7 @@
 }
 
 func TestFatal(t *testing.T) {
+	t.Parallel()
 	if os.Getenv("ACTUALLY_FATAL") == "1" {
 		log := New(&bytes.Buffer{})
 		defer func() {
@@ -150,6 +153,7 @@
 }
 
 func TestNonFatal(t *testing.T) {
+	t.Parallel()
 	if os.Getenv("ACTUAL_TEST") == "1" {
 		log := New(&bytes.Buffer{})
 		defer log.Cleanup()
@@ -166,6 +170,7 @@
 }
 
 func TestRecoverFatal(t *testing.T) {
+	t.Parallel()
 	log := New(&bytes.Buffer{})
 	defer func() {
 		if p := recover(); p != nil {
@@ -182,6 +187,7 @@
 }
 
 func TestRecoverNonFatal(t *testing.T) {
+	t.Parallel()
 	log := New(&bytes.Buffer{})
 	defer func() {
 		if p := recover(); p == nil {
@@ -198,6 +204,7 @@
 }
 
 func TestRuntimePanic(t *testing.T) {
+	t.Parallel()
 	defer func() {
 		if p := recover(); p == nil {
 			t.Errorf("Panic not thrown")