fix test cases

package golib/sfxclient currently is taking close to 30s for running
all test cases. This fix will reduce the testing time to ~4s.

Other packages have minor tune ups reducing testing time in order of
milliseconds.

There is no test case for golib/trace/format as it is auto-generated code
and golib/logkey as it contains only global variables. So removing both the
packages from go list output in travis.yml file.

golib doesn't use t.Parallel in any of the test suites and hence -parallel flag
is removed from go test arguments list

distconf/zk_test.go

@@ -74,9 +74,12 @@ func TestZkConf(t *testing.T) {
 
 	DefaultLogger.Log("Doing write 3")
 	assert.NoError(t, z.Write("TestZkConf", nil))
-	select {
-	case res = <-signalChan:
-	case <-time.After(time.Second * 3):
+	for res != "TestZkConf" {
+		select {
+		case res = <-signalChan:
+		default:
+			runtime.Gosched()
+		}
 	}
 	assert.Equal(t, "TestZkConf", res)
 }