v1.1.0

CHANGES:

• now if there is no etcd connection - etcd provider returns you error instead panic.
• etcd provider also accepts context as input for working with the logger.

BUG FIXES:

• fixed the problem of re-creating a new context when starting discovery, which led to a lack of discovery logging.

TESTS:

• Simplify test/tnt/{Makefile,router.lua).
• Indent fix for test/tnt/storage.lua.

FEATURES:

• now we write topology changes to debug logs.
• now we write info logs about new replicaset adding and nodes state.
• added pull request template to repository.