This release contains some minor improvements and updates to include software:

- Added request id to nginx log to easily track the Chef request through the logs.
- Erchef and Bookshelf can optionally use mTLS protocol for their internal communications.
- Habitat package improvements:
    - Increased `authn:keygen_timeout` amount for `oc_erchef` hab pkg.
    - Removed `do_end` function from `chef-server-ctl` hab plan.
    - Enhanced `chef-server-ctl` to function in more habitat environments.
    - `chef-server-ctl` commands pass relevant TLS options during bifrost API calls.
- Used standard ruby-cleanup definition, which shrinks install size by \~5% on disk.
- Removed unused couchdb configurables.

## Security

### Erlang

Erlang has been updated to 18.3.4.9 to resolve the following CVEs:

- [CVE-2017-1000385](https://nvd.nist.gov/vuln/detail/CVE-2017-1000385)
- [CVE-2016-10253](https://nvd.nist.gov/vuln/detail/CVE-2016-10253)

### OpenSSL

OpenSSL has been updated from 1.0.2p to 1.0.2q to resolve the following CVEs:

- [CVE-2018-0734](https://nvd.nist.gov/vuln/detail/CVE-2018-0734)
- [CVE-2018-5407](https://nvd.nist.gov/vuln/detail/CVE-2018-5407)

### Ruby

Ruby has been updated from 2.5.1 to 2.5.3 to resolve the following CVEs:

- [CVE-2018-16396](https://nvd.nist.gov/vuln/detail/CVE-2018-16396)
- [CVE-2018-16395](https://nvd.nist.gov/vuln/detail/CVE-2018-16395)