etcdserver: move newTestMember* to member_test.go
etcdserver: remove unnecessary newTestMemberp
etcdserver: use member pointer for all tests
Merge pull request #1688 from xiang90/cluster_test

Cluster test
transport: create a tls listener only if the tlsInfo is not empty and the scheme is HTTPS
*: support updating advertise-peer-url
Users might want to update the peerurl of the etcd member in several cases.
For example, if the IP address of the physical machine etcd running on is
changed, user need to update the adversite-pee-rurl accordingly.
This commit makes etcd support updating the advertise-peer-url of its members.
Merge pull request #1687 from xiang90/fix_listener

Fix listener
raft: update unstable when calling stableTo with 0

It should update unstable in this case because it may happen that raft
only writes entry 0 into stable storage.
raft: nodes return sorted ids

This makes raft.softState return the same result when its soft state is
not changed.
Merge pull request #1692 from yichengq/221

raft: nodes return sorted ids
Merge pull request #1679 from xiang90/peerurl

update peer url
Merge pull request #1689 from yichengq/219

raft: update unstable when calling stableTo with 0
etcdserver: use member instead of node at etcd level
Merge pull request #1694 from xiang90/use_member

etcdserver: use member instead of node at etcd level
raft: add comment string for TestNodeStart
Merge pull request #1695 from xiang90/nodestart

raft: add comment string for TestNodeStart
raft: add a test for node.Tick
etcdserver: ensure initial-advertise-peer-urls match initial-cluster

This adds a check to setupCluster to ensure that the list of URLs
specified in `initial-advertise-peer-urls` matches those configured in
`initial-cluster` for this node. Also updates the documentation to
clarify this and address some changes in wording.
etcdserver: move peer URLs check to config
integration: fix test to propagate NewServer errors