Missing cacert parameter in get_auth_1_0() and it makes requests_args['verify']
is True in default(likes "swift --os-cacert ssl.crti list").
The requests_args['verify'] should be a ca-certificate file name("ssl.crt").
Change-Id: Id3110f3818f55922ad19eeb1ead80fface824009
Closes-Bug: 1418473