[DOCS] Fix restore snapshot index setting links (elastic#1571)

Merge branch '5.8' of github.com:elastic/curator into 5.8

Version bump for new release build process. (elastic#1469)

The actual release scripts will be updated in the future and committed to the repository. For now, suffice to say that they've been tested, and the LD_LIBRARY_PATH is no longer set system-wide, but rather in the `/usr/bin` scripts themselves, which call the binaries in `/opt/elasticsearch-curator`

Release prep for 5.8.0 (again) (elastic#1468)

This time it should be for real.

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