Dev: raft: consolidate acks processing
Medium: raft: don't update the ticket expiry before leader got elected
Medium: raft: delay ticket commit to the CIB on manual grants (bnc#876321)

If a site didn't respond to the leader's heartbeat, under certain
circumstances that site may still be holding the ticket. In that
case we delay the ticket commit to the CIB and sending out the
updates until the ticket expires.
Low: raft: accept heartbeats in init state too
Dev: raft: compare ticket commit_index only if coming from the leader
Medium: add booth description to README
Medium: raft: reduce the election timeout to the ticket timeout
Medium: raft: wait a short delay before starting new elections
Dev: raft: fix status reply processing
Medium: raft: include reason for RPC

This should help in some corner cases, in particular after split
brain when a server comes back having established a completely
wrong picture.
Medium: raft: test for misled lost ticket condition

Under some split brain conditions, for instance if a follower
gets separated from the leader, it will eventually consider the
ticket lost. With connection reestablished, it will try to
acquire the ticket. We can test here for that kind of situation
and set the reappearing follower straight.
Dev: raft: don't reset term and commit_index
Medium: ticket: allow enforcing immediate grant (bnc#876191)
Dev: ticket: run before-acquire-handler on ticket renewal too
Medium: script: fix regexp
Dev: doc: man page update
Dev: update debug messages
Medium: raft: set ticket wakeup after MY_INDEX (bnc#877356)
build: add the service-still-runnable script