Allow freezing searchable snapshots#52653

DaveCTurner merged 8 commits intoelastic:feature/searchable-snapshotselastic/elasticsearch:feature/searchable-snapshotsfrom

DaveCTurner:2020-02-21-freeze-searchable-snapshotsDaveCTurner/elasticsearch:2020-02-21-freeze-searchable-snapshotsCopy head branch name to clipboard