Correct mispell words in comments

1) test_list_hosts_with_nonexistent_zone
   "and no hosts will be retured", "retured"
2) test_update_default_quotas
   "that we go from -1 (unlimitted)", "unlimitted"
...
and so on

Change-Id: I185a792e03f78d34dff4a923d0f34902470497ce
Closes-Bug: #1578930

tempest/api/compute/admin/test_hosts.py

@@ -49,7 +49,7 @@ class HostsAdminTestJSON(base.BaseV2ComputeAdminTest):
     @test.idempotent_id('c6ddbadb-c94e-4500-b12f-8ffc43843ff8')
     def test_list_hosts_with_nonexistent_zone(self):
         # If send the request with a nonexistent zone, the request will be
-        # successful and no hosts will be retured
+        # successful and no hosts will be returned
         hosts = self.client.list_hosts(zone='xxx')['hosts']
         self.assertEqual(0, len(hosts))
 

tempest/api/compute/admin/test_quotas.py

@@ -185,7 +185,7 @@ class QuotaClassesAdminTestJSON(base.BaseV2ComputeAdminTest):
         # increment all of the values for updating the default quota class
         for quota, default in six.iteritems(body):
             # NOTE(sdague): we need to increment a lot, otherwise
-            # there is a real chance that we go from -1 (unlimitted)
+            # there is a real chance that we go from -1 (unlimited)
             # to a very small number which causes issues.
             body[quota] = default + 100
         LOG.debug("update limits for the default quota class set")

tempest/api/compute/volumes/test_volumes_list.py

@@ -27,7 +27,7 @@ class VolumesTestJSON(base.BaseV2ComputeTest):
     # ensure that the backing file for the volume group that Nova uses
     # has space for at least 3 1G volumes!
     # If you are running a Devstack environment, ensure that the
-    # VOLUME_BACKING_FILE_SIZE is atleast 4G in your localrc
+    # VOLUME_BACKING_FILE_SIZE is at least 4G in your localrc
 
     @classmethod
     def skip_checks(cls):

tempest/common/preprov_creds.py

@@ -219,9 +219,9 @@ class PreProvisionedCredentialProvider(cred_provider.CredentialProvider):
         else:
             hashes = self.hash_dict['creds'].keys()
         # NOTE(mtreinish): admin is a special case because of the increased
-        # privlege set which could potentially cause issues on tests where that
-        # is not expected. So unless the admin role isn't specified do not
-        # allocate admin.
+        # privilege set which could potentially cause issues on tests where
+        # that is not expected. So unless the admin role isn't specified do
+        # not allocate admin.
         admin_hashes = self.hash_dict['roles'].get(self.admin_role,
                                                    None)
         if ((not roles or self.admin_role not in roles) and

tempest/lib/cmd/skip_tracker.py

@@ -48,7 +48,7 @@ def debug(msg, *args, **kwargs):
 
 
 def find_skips(start):
-    """Find the entire list of skiped tests.
+    """Find the entire list of skipped tests.
 
     Returns a list of tuples (method, bug) that represent
     test methods that have been decorated to skip because of

tempest/lib/common/utils/data_utils.py

@@ -39,7 +39,7 @@ def rand_uuid_hex():
 
 
 def rand_name(name='', prefix=None):
-    """Generate a random name that inclues a random number
+    """Generate a random name that includes a random number
 
     :param str name: The name that you want to include
     :param str prefix: The prefix that you want to include
@@ -81,7 +81,7 @@ def rand_password(length=15):
 
 
 def rand_url():
-    """Generate a random url that inclues a random number
+    """Generate a random url that includes a random number
 
     :return: a random url. The format is 'https://url-<random number>.com'.
              (e.g. 'https://url-154876201.com')

tempest/scenario/manager.py

@@ -648,7 +648,7 @@ class ScenarioTest(tempest.test.BaseTestCase):
         """
         if CONF.validation.connect_method == 'floating':
             # The tests calling this method don't have a floating IP
-            # and can't make use of the validattion resources. So the
+            # and can't make use of the validation resources. So the
             # method is creating the floating IP there.
             return self.create_floating_ip(server)['ip']
         elif CONF.validation.connect_method == 'fixed':

tempest/scenario/network_resources.py

@@ -76,7 +76,7 @@ class DeletableResource(AttributeDict):
         """Waits for a network resource to reach a status
 
         @param fetch: the callable to be used to query the resource status
-        @type fecth: callable that takes no parameters and returns the resource
+        @type fetch: callable that takes no parameters and returns the resource
         @param status: the status that the resource has to reach
         @type status: String
         """