`docker events > /tmp/out` should not print control
characters to non-terminal STDOUT.
This addresses commit 26b4a4920adca614f6be17a96f254f331271faf0
without creating regression described in issue #6509.
Signed-off-by: Vojtech Vitek (V-Teq) <vvitek@redhat.com>
Upstream-commit: d742c57f534352b6cad596d0c9fe8cf84044e92a
Component: engine