##### 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
```

super(ContainerManager, self).__init__()
        if client.module.params.get('log_options') and not client.module.params.get('log_driver'):
            client.module.warn('log_options is ignored when log_driver is not specified')
        if client.module.params.get('healthcheck') and not client.module.params.get('healthcheck').get('test'):
            client.module.warn('healthcheck is ignored when test is not specified')
        if client.module.params.get('restart_retries') is not None and not client.module.params.get('restart_policy'):
            client.module.warn('restart_retries is ignored when restart_policy is not specified')
        self.client = client
        self.parameters = TaskParameters(client)
        self.check_mode = self.client.check_mode
        self.results = {'changed': False, 'actions': []}
        self.diff = {}
        self.diff_tracker = DifferenceTracker()
        self.facts = {}
        state = self.parameters.state
        if state in ('stopped', 'started', 'present'):
            self.present(state)
        elif state == 'absent':
            self.absent()
        if not self.check_mode and not self.parameters.debug:
            self.results.pop('actions')
        if self.client.module._diff or self.parameters.debug:
            self.diff['before'], self.diff['after'] = self.diff_tracker.get_before_after()
            self.results['diff'] = self.diff
        if self.facts:
            self.results['ansible_facts'] = {'docker_container': self.facts}
            self.results['container'] = self.facts
    def present(self, state):