Set default bootstrap_expect for consul servers

So they will properly elect a leader. Should probably be set to 3 as that's the minimum number we're recommending.

Need to check behavior when more than 3 hosts join. Should still just initiate an election when 3 hosts join.

changed the description

created branch 2762-set-default-bootstrap_expect-for-consul-servers

mentioned in merge request !1921 (merged)

closed via merge request !1921 (merged)

mentioned in commit 163bfc1a

mentioned in commit 8fac7d27