When listen_ssl is true, enable the SSL engine and set a cert/key

listen_ssl is insufficient to enable SSL because it doesn't enable
the SSL engine and doesn't set a certificate and key to use.

Change-Id: I42dc29424aee5d8abefeb26b84825daf4afa4ec7
Merge "When listen_ssl is true, enable the SSL engine and set a cert/key"
Fix readme typos

A couple of the links in the readme are broken.  This fixes the
ones that I noticed.  Also fixes a typo in the release notes.

Change-Id: I244a187593dff11d554c2c8d86b0a531259a433f