py3 (2) - update host.py to py3 compatibility

- py3 is more particular about external package imports;
specify kollacli utils explicitly
- fix typo on oslo.utils in requirements.txt
- use standard spec for oslo utils - !=2.6.0,>=2.4.0

buildrpm/openstack-kollacli.spec

@@ -43,7 +43,7 @@ Requires:       python-cliff                >= 1.13.0
 Requires:       python-cliff-tablib         >= 1.1
 Requires:       python-jsonpickle           >= 0.9.2
 Requires:       python-oslo-i18n            >= 2.5.0
-Requires:       python-oslo-utils           >= 2.7.0
+Requires:       python-oslo-utils           !=2.6.0, >=2.4.0
 Requires:       python-paramiko             >= 1.15.1
 Requires:       python-pbr                  >= 1.6.0
 Requires:       python-six                  >= 1.9.0

kollacli/host.py

@@ -16,7 +16,6 @@ import getpass
 import logging
 import os
 import traceback
-import utils
 import yaml
 
 from kollacli.ansible.inventory import Inventory
@@ -50,7 +49,7 @@ class HostAdd(Command):
     def take_action(self, parsed_args):
         try:
             hostname = parsed_args.hostname.strip()
-            hostname = utils.convert_to_unicode(hostname)
+            hostname = convert_to_unicode(hostname)
 
             inventory = Inventory.load()
             inventory.add_host(hostname)
@@ -129,7 +128,7 @@ class HostRemove(Command):
     def take_action(self, parsed_args):
         try:
             hostname = parsed_args.hostname.strip()
-            hostname = utils.convert_to_unicode(hostname)
+            hostname = convert_to_unicode(hostname)
             inventory = Inventory.load()
             inventory.remove_host(hostname)
             Inventory.save(inventory)
@@ -158,7 +157,7 @@ class HostList(Lister):
             hostname = None
             if parsed_args.hostname:
                 hostname = parsed_args.hostname.strip()
-                hostname = utils.convert_to_unicode(hostname)
+                hostname = convert_to_unicode(hostname)
 
             inventory = Inventory.load()
 
@@ -197,7 +196,7 @@ class HostCheck(Command):
     def take_action(self, parsed_args):
         try:
             hostname = parsed_args.hostname.strip()
-            hostname = utils.convert_to_unicode(hostname)
+            hostname = convert_to_unicode(hostname)
             inventory = Inventory.load()
             if not inventory.get_host(hostname):
                 _host_not_found(self.log, hostname)
@@ -241,7 +240,7 @@ class HostSetup(Command):
             else:
                 # single host setup
                 hostname = parsed_args.hostname.strip()
-                hostname = utils.convert_to_unicode(hostname)
+                hostname = convert_to_unicode(hostname)
                 if not inventory.get_host(hostname):
                     _host_not_found(self.log, hostname)
 
@@ -257,7 +256,7 @@ class HostSetup(Command):
                     setup_user = get_setup_user()
                     password = getpass.getpass('%s password for %s: ' %
                                                (setup_user, hostname))
-                password = utils.convert_to_unicode(password)
+                password = convert_to_unicode(password)
                 inventory.setup_host(hostname, password)
 
         except CommandError as e:

requirements.txt

@@ -5,7 +5,7 @@ cliff-tablib>=1.1
 docker-py>=1.3.1
 jsonpickle>=0.9
 oslo.i18n>=1.3.0  # Apache-2.0
-oslo.utils>-2.7.0
+oslo.utils!=2.6.0,>=2.4.0 # Apache-2.0
 paramiko>=1.15
 pbr>=0.10
 pexpect>=2.3,<3.3