Summary: drop use of str() on exception messages

Description:
- Oracle-Bug: 21810245 - drop use of strings on exception messages.
When messages are in > 128 unicode, str() will throw an exception.

kollacli/ansible/inventory.py

@@ -125,14 +125,14 @@ class Host(object):
         except Exception as e:
             raise exceptions.CommandError(
                 'ERROR: Host (%s) setup failed : %s'
-                % (self.name, str(e)))
+                % (self.name, e))
         return True
 
     def check(self):
         kollacli_home = get_kollacli_home()
         command_string = 'sudo -u kolla ansible '
         inventory_string = '-i ' + os.path.join(kollacli_home,
-                           'tools', 'json_generator.py')
+                                                'tools', 'json_generator.py')
         ping_string = ' %s %s' % (self.name, '-m ping')
         cmd = (command_string + inventory_string + ping_string)
 
@@ -140,11 +140,12 @@ class Host(object):
         if err_flag:
             raise exceptions.CommandError(
                 'ERROR: Host (%s) check failed : %s'
-                % (self.name, str(output)))
+                % (self.name, output))
         else:
             self.log.info('Host (%s) check succeeded' % self.name)
         return True
 
+
 class HostGroup(object):
     class_version = 1
 
@@ -292,7 +293,7 @@ class Inventory(object):
             shutil.copyfile(tmp_path, inventory_path)
             os.remove(tmp_path)
         except Exception as e:
-            raise Exception('ERROR: saving inventory : %s' % str(e))
+            raise Exception('ERROR: saving inventory : %s' % e)
         finally:
             try:
                 os.close(tmp_filehandle)

kollacli/sshutils.py

@@ -100,14 +100,14 @@ def _post_setup_checks(net_addr, log):
         ssh_client = ssh_connect(net_addr, get_admin_user(), '')
 
     except Exception as e:
-        raise CommandError("ERROR: remote login failed : %s" % str(e))
+        raise CommandError("ERROR: remote login failed : %s" % e)
 
     try:
         # a basic test
         ssh_client.exec_command('ls')
 
     except Exception as e:
-        raise CommandError("ERROR: remote command 'ls' failed : %s" % str(e))
+        raise CommandError("ERROR: remote command 'ls' failed : %s" % e)
 
     finally:
         _close_ssh_client(ssh_client)

kollacli/utils.py

@@ -13,9 +13,8 @@
 #    under the License.
 import logging
 import os
-import yaml
 import pexpect
-import string
+import yaml
 
 
 def get_kolla_home():