Merge pull request elastic#1396 from untergeek/release/5.7.6

Security update

Merge pull request elastic#1391 from untergeek/release/5.7.5

Haiku bugfix release

Merge pull request elastic#1390 from untergeek/fix/1389

Fix ILM filter

Release 5.7.3

Should finally address the `boto3` vs. `requests` issues with
`urllib3` collisions.

Merge branch 'master' into 5.7

Merge branch '5.7' of github.com:elastic/curator into 5.7

Merge pull request elastic#1384 from untergeek/pkg_build/py3.6.8

Update these to build python3 3.6.8

Build and doc essentials for the 5.6.0 release

Remove extra args to fix show_snapshots singleton

Merge branch '5.x' into 5.5