tree e8f246a80a3ccf16534f8e7e4a1a097cca7b3208
parent 0ac318c71851d1361d004d0895207b8bf40fb573
author Karl Schultz <karl@lunarg.com> 1517922755 -0700
committer Karl Schultz <karl@lunarg.com> 1517938478 -0700

build: Adjust travis config for VT updates

- VT update external script no longer accepts jsoncpp flag
  so remove call to build it.  The script now builds it all the time.
- Add back cmake flag to turn off LVL layers build.  LVL should
  now build the layer utils even with layer build disabled.  VT
  needs the layer utils to build devsim.

Change-Id: I1c5421d4b5553b3d39f68f075ee5850588696775