adapt import statements to models module

ca_shell.py

@@ -4,7 +4,7 @@
 import cmd
 import sys
 
-from authority import SSHAuthority, SSLAuthority
+from models.authority import SSHAuthority, SSLAuthority
 from ca_manager import sign_request
 
 __doc__= """

lookup.py

@@ -11,9 +11,9 @@ import shutil
 import sqlite3
 import tempfile
 
-from authority import *
-from certificate import *
-from request import *
+from models.authority import *
+from models.certificate import *
+from models.request import *
 from paths import *
 
 __doc__= """

models/authority.py

@@ -7,8 +7,8 @@ import pickle
 import subprocess
 
 from paths import *
-from certificate import Certificate
-from request import UserSSHRequest, HostSSHRequest, HostSSLRequest
+from models.certificate import Certificate
+from models.request import UserSSHRequest, HostSSHRequest, HostSSLRequest
 
 __doc__= """
 Module of classes to handle certificate requests