Merge pull request #11 in ESSS/ben10 from fb-EDEN-578-stabilize-performance-fixture to master

* commit '70d0a9fa7810e356f4c9a768e28673ae0121d9de':
  EDEN-578 Performance check fails occasionally
Removed performance fixture. EDEN-603
Added methods for creating and uploading caches in DirCache

Changed some getter functions to read only properties.

EDEN-577
Use our Grammar.txt instead of looking for a file.
Use our PatternGrammar.txt instead of looking for a file.
Merge pull request #12 in ESSS/ben10 from EDEN-577-use-dircache to master

* commit 'd777338497979ff12b8c9ce2d49846bd22535aeb':
  Added methods for creating and uploading caches in DirCache
  Removed performance fixture. EDEN-603
Deleting local_dir for DirCache even if it is not a link
Trying to fix flaky tests in filesystem. EDEN-614
Updating dependencies.
BEN-30: Fixes on terraforming.ini.
WIP: Terraformer: scopes and names.