Add the -api-enable-cors flag when running docker
in daemon mode to allow CORS requests to be made to
the Remote Api. The default value is false for this
flag to not allow cross origin request to be made.
Also added a handler for OPTIONS requests the standard
for cross domain requests is to initially make an
OPTIONS request to the api.
Upstream-commit: 6d5bdff3942ce5e030b2cbd1510f418de25a1a53
Component: engine
19f2b9dadf