message: [language][functional tests] add fuzzing feature flag for dependency
  Closes:
  Approved by: sunshowers
diff: @@ -16,7 +16,7 @@ libra-vm = { path = "../libra-vm", version = "0.1.0" }
  vm = { path = "../vm", version = "0.1.0" }
  bytecode-verifier = { path = "../bytecode-verifier", version = "0.1.0" }
  language-e2e-tests = { path = "../e2e-tests", version = "0.1.0" }
  -libra-config = { path = "../../config", version = "0.1.0" }
  +libra-config = { path = "../../config", version = "0.1.0", features = ["fuzzing"] }
  libra-crypto = { path = "../../crypto/crypto", version = "0.1.0" }
  libra-workspace-hack = { path = "../../common/workspace-hack", version = "0.1.0" }
  once_cell = "1.4.0"
  