Merge pull request #39 from hotfixes-v2.26

fix: wiping out data before recovery tests
Script to get elliptics version from repo branch was added.
Merge pull request #42 from 'features/elliptics-version-script-v2.26'

Script to get elliptics version from repo branch was added.
Merge branch 'v2.26' into hotfixes-v2.26