TBR: Add location of node/npm to PATH when VANADIUM_ROOT exists.
TBR: Add location of node/npm to PATH when VANADIUM_ROOT exists.

Change-Id: I133204e5e0e05789f4ff519c09d1a55ba13d17b4

viksit/chat,vanadium/chat,viksit/chat,viksit/chat,vanadium/chat,vanadium/chat,viksit/chat,vanadium/chat,vanadium/chat,viksit/chat