Summary:
Update `build_tools/update_dependencies.sh` to use /mnt/gvfs path in dependencies.sh
This should prevent us from having errors because of changing the path of a compiler or a library
Test Plan:
make all -j64
USE_CLANG make all -j64
ROCKSDB_FBCODE_BUILD_WITH_481=1 make all -j64
Reviewers: andrewkr, sdong, yiwu
Reviewed By: yiwu
Subscribers: andrewkr, dhruba
Differential Revision: https://reviews.facebook.net/D59295