Nginx allow secure websocket connections

This changes the nginx configuration so the HTTP response headers
for the phosphor-webui web applicaton will allow wss (secure
WebSocket) connections back to the host.  This is needed for the
Serial Over Lan (SOL) function.

A recent fix used Content-Security-Policy default-src 'self'
which unfortunately does not allow to wss connections.  For
details see https://github.com/openbmc/openbmc/issues/3409

Tested: The web app SOL function works

Resolves: openbmc/openbmc#3409

Change-Id: Ie8d76ab109910427d4627d76633bc5f75a34f821
Signed-off-by: Joseph Reynolds <jrey@us.ibm.com>
1 file changed