[etcd-backup-restore]

Most notable changes

[USER] HTTP API for triggering out-of-schedule full and delta snapshots now returns snapshot metadata in response body in JSON format. (#214, @shreyas-s-rao)

[USER] Added new HTTP API for fetching details of latest full and delta snapshots, in JSON format. (#214, @shreyas-s-rao)
[USER] Add metrics etcdbr_snapstore_latest_deltas_total and etcdbr_snapstore_latest_deltas_revisions_total to provide information about the delta snapshots since the latest full snapshot in the snapstore. (#211, @shreyas-s-rao)
[OPERATOR] Skip the first full snapshot on start, if initial delta snapshot is taken and last full snapshot is recent enough than 24hr. (#222, @swapnilgm)
[OPERATOR] Add documentation to force restore etcd data. (#217, @shreyas-s-rao)
[OPERATOR] The release tags from now are prefixed with v. (#210, @ialidzhikov)
[OPERATOR] Configuring backup-restore server using config file is now supported. (#208, @swapnilgm)
[DEVELOPER] Fix integration test setup script. (#215, @shreyas-s-rao)