Log Message:
sysutils/consul: Update to 1.2.0.

FEATURES:

- Connect Feature Beta: This version includes a major new feature for
  Consul named Connect. Connect enables secure service-to-service
  communication with automatic TLS encryption and identity-based
  authorization.
  - Connect must be enabled explicitly in configuration so upgrading a
    cluster will not affect any existing functionality until it's
    enabled.
  - This is a Beta feature, we don't recommend enabling this in
    production yet. Please see the documentation for more information.
- dns: Enable PTR record lookups for services with IPs that have no
  registered node
- ui: Default to serving the new UI. Setting the `CONSUL_UI_LEGACY`
  environment variable to `1` or `true` will revert to serving the old
UI

IMPROVEMENTS:

- agent: A Consul user-agent string is now sent to providers when
  making retry-join requests
- client: Add metrics for failed RPCs
- agent: Add configuration entry to control including TXT records for
  node meta in DNS responses
- client: Make RPC rate limit configuration reloadable

BUG FIXES:

- agent: Fixed an issue where watches were being duplicated on reload.
- agent: Fixed an issue with Agent watches on a HTTPS only agent would
  fail to use TLS.
- agent: Fixed bug that would cause unnecessary and frequent logging
  yamux keepalives
- dns: Re-enable full DNS compression