fix(UnityXR): add more joystick names
fix(UnityXR): add more joystick names

Add HTC Vive controller joystick names as reported by Unity 2017.4.2f2.

gomez-addams/SteamVR_Unity_Toolkit,thestonefox/SteamVR_Unity_Toolkit,Innoactive/IA-unity-VR-toolkit-VRTK,adamjweaver/VRTK,thestonefox/VRTK,TMaloteaux/SteamVR_Unity_Toolkit