feat(etcd-discovery): Add support to etcd-bootstrap for etcd-discovery
bump(coreos-init): Upgrade coreos/init ebuild

Bump coreos-init ebuild to 0.0.1-r37 for coreos/init
commit 7baa3e940b094accb7fb9ca344aafba69a13a732
fix(etcd-bootstrap): Use higher election timeout on EC2
bump(etcd): etcd-0.3.0 -> etcd-0.3.0-r1

Bump etcd 0.3.0 ebuild to 0.3.0-r1 to incorporate
changes to the etcd-bootstrap script.
Merge pull request #334 from bcwaldon/etcd-disco

etcd-bootstrap, etcd-discovery