Allow web socket over nginx https connection

Testing: Used html from Deepak/Rahul that subscribed to
ambient temp sensor and verified the events showed up in
the web socket via my browser console.

Resolves openbmc/openbmc#2881
Resolves openbmc/openbmc#925

Change-Id: I606a68de7b5c76ae6253dc1722d087e953b7ca8b
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
1 file changed