etcdctl: Set watch consistency to STRONG
*: rename initial-cluster-name to initial-cluster-token
etcdctl: remove SetConsistency call

This call to SetConsistency is explicitly setting the default
value, so it's really unnecessary.
etcdserver: exit program when node is removed

Originally added in 400dd2d7bce39851220899bb6d98086583e73ead,
and removed by mistake when refactor cluster.
Merge pull request #1452 from unihorn/187

etcdserver: exit program when node is removed
Merge pull request #1511 from coreos/set-watch-consistency-to-strong

etcdctl: Set watch consistency to STRONG
doc: add doc for initial-cluster-token
Merge pull request #1537 from xiangli-cmu/cluster-token

Cluster token
*: create ID type

This creates a simple ID type (wrapped around uint64) to provide for
standard serialization/deserialization to a string (i.e. base 16
encoded). This replaces strutil so now that package is removed.