Support transforms in file path

A critical requirement to support transforms on nodes, is retruning
different nodes for the same name depending on the requesting uid. To
do this, we have to ensure there is no dentry caching so that we get a
FUSE_LOOKUP before any IO request for nodes that support transforms

Test: Manual && fsstress for ~24hrs
Bug: 158466177
Change-Id: I73e06f6d52df7ae7ee498d537a4551a5ebb8d092
1 file changed