##### SUMMARY
If there's currently a container with image `repo/name:tag1` running (or created), and I change the `docker_container` image tag to `repo/name:tag2` (where this image hasn't been pulled yet), `docker_container` will not notice that the image changed and will not recreate the container.

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
docker_container

##### ANSIBLE VERSION
```paste below
2.9.0
```

self.diff_tracker.add('running', parameter=False, active=was_running)
                self.container_stop(container.Id)
                container = self._get_container(container.Id)
            if state == 'started' and container.paused != self.parameters.paused:
                self.diff_tracker.add('paused', parameter=self.parameters.paused, active=was_paused)
                if not self.check_mode:
                    try:
                        if self.parameters.paused:
                            self.client.pause(container=container.Id)
                        else:
                            self.client.unpause(container=container.Id)
                    except Exception as exc:
                        self.fail("Error %s container %s: %s" % (
                            "pausing" if self.parameters.paused else "unpausing", container.Id, str(exc)
                        ))
                    container = self._get_container(container.Id)
                self.results['changed'] = True
                self.results['actions'].append(dict(set_paused=self.parameters.paused))
        self.facts = container.raw
    def absent(self):
        container = self._get_container(self.parameters.name)
        if container.exists:
            if container.running:
                self.diff_tracker.add('running', parameter=False, active=True)
                self.container_stop(container.Id)
            self.diff_tracker.add('exists', parameter=False, active=True)
            self.container_remove(container.Id)
    def fail(self, msg, **kwargs):
        self.client.fail(msg, **kwargs)
    def _output_logs(self, msg):