It looks like Electronic Arts and Dice have placed a hidden Yoda Easter Egg on the Tatooine survival map called Rebel Depot. This happens to be a newer survival mission where if you do what needs to be done in order to unlock the Easter Egg, you will get to hear Yoda speaking to Luke Skywalker.
This should help you to understand what you need to do in order to trigger the Yoda Easter Egg.
Yoda Easter Egg
Start sprinting as soon as Admiral Ackbar gives you the go ahead on the survival mission. After you get the go ahead, turn around and start to run down the hallway that is directly behind you.
Go to the end of the hallway, sprinting the whole way, where it opens up into the first large room. On your right, you will then see your first vent that you need to shoot. Once you shoot that vent, you can move onto the next task.
As you continue, stay on the outside of the map, you will find 3 control panels that you must shoot. They will stop beeping once you do shoot them. Once you disable all 3 of these control panels continue on to the next vent which is not too far away.
You will now just need to shoot the remaining 4 vents around the outside of Rebel Depot. The video below will show you the rest of the vents to disable, and what you need to do to finish the Yoda Easter Egg. This Easter Egg is quite easy to complete, and you shouldn’t have much trouble doing so. Again, the video right below will show you the remaining 4 vents that need to be disabled.
If you do complete all the tasks in the Easter Egg, you will get to hear the scene from The Empire Strikes Back where Yoda is talking with Luke Skywalker in the swamps of Dagobah. This is a well-known scene where Yoda tells Luke that he must do, or do not. There is no try.