Construct an SshKey instance from passed arguments

def _get_ssh_key(kwargs):
    '''
    Construct an SshKey instance from passed arguments
    '''
    ssh_key_name = kwargs.get('name', None)
    ssh_key_description = kwargs.get('description', None)
    public_key = kwargs.get('public_key', None)

    return SshKey(
        name=ssh_key_name,
        description=ssh_key_description,
        public_key=public_key
    )