'Delete a VPN Connection.
:type vpn_connection_id: str
:param vpn_connection_id: The ID of the vpn_connection to be deleted.
:type dry_run: bool
:param dry_run: Set to True if the operation should not actually run.
:rtype: bool
:return: True if successful'

def delete_vpn_connection(self, vpn_connection_id, dry_run=False):

    params = {'VpnConnectionId': vpn_connection_id}
    if dry_run:
        params['DryRun'] = 'true'
    return self.get_status('DeleteVpnConnection', params)
