Log Message:
Update py-borgbackup to 1.1.9.

Version 1.1.9 (2019-02-10)
--------------------------

Fixes:

- security fix: configure FUSE with "default_permissions", #3903
  "default_permissions" is now enforced by borg by default to let the
  kernel check uid/gid/mode based permissions.
  "ignore_permissions" can be given to not enforce \ 
"default_permissions".
- make "hostname" short, even on misconfigured systems, #4262
- fix free space calculation on macOS (and others?), #4289
- config: quit with error message when no key is provided, #4223
- recover_segment: handle too small segment files correctly, #4272
- correctly release memoryview, #4243
- avoid diaper pattern in configparser by opening files, #4263
- add "# cython: language_level=3" directive to .pyx files, #4214
- info: consider part files for "This archive" stats, #3522
- work around Microsoft WSL issue #645 (sync_file_range), #1961

New features:

- add --rsh command line option to complement BORG_RSH env var, #1701
- init: --make-parent-dirs parent1/parent2/repo_dir, #4235

Other:

- add archive name to check --repair output, #3447
- check for unsupported msgpack versions
- shell completions:

  - new shell completions for borg 1.1.9
  - more complete shell completions for borg mount -o
  - added shell completions for borg help
  - option arguments for zsh tab completion
- docs:

  - add FAQ regarding free disk space check, #3905
  - update BORG_PASSCOMMAND example and clarify variable expansion, #4249
  - FAQ regarding change of compression settings, #4222
  - add note about BSD flags to changelog, #4246
  - improve logging in example automation script
  - add note about files changing during backup, #4081
  - work around the backslash issue, #4280
  - update release workflow using twine (docs, scripts), #4213
  - add warnings on repository copies to avoid future problems, #4272
- tests:

  - fix the homebrew 1.9 issues on travis-ci, #4254
  - fix duplicate test method name, #4311