container: add optional http(s) proxy option

container: add optional http(s) proxy option

When using a http(s) proxy with either docker or podman we can rely on
the HTTP_PROXY, HTTPS_PROXY and NO_PROXY environment variables.
But with ansible, even if those variables are defined in a source file
then they aren't loaded during the container pull/login tasks.
This implements the http(s) proxy support with docker/podman.
Both implementations are different:
  1/ docker doesn't rely en the environment variables with the CLI.
Thos are needed by the docker daemon via systemd.
  2/ podman uses the environment variables so we need to add them to
the login/pull tasks.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1876692
Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>