Roll infra/go/src/github.com/luci/luci-go/ to e463aad9460808b6388f431c712c984b70c076bb.
Roll infra/go/src/github.com/luci/luci-go/ to e463aad9460808b6388f431c712c984b70c076bb.

$ git log eb389c95c..e463aad94 --date=short --format='%ad %ae %s'
2015-06-12 maruel Retry even when the reported error is url.Error.
2015-06-12 dnj Add lru, an LRU cache implementation.
2015-06-12 yyanagisawa Add GetReplicationState to model.
2015-06-11 yyanagisawa Add datastore.Key generator functions.
2015-06-09 dnj Fix tests (and presubmit).

R=vadimsh@chromium.org
BUG=

Review URL: https://codereview.chromium.org/1181243004

nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra,nicko96/Chrome-Infra