Bump default pagesize

Bumping default pagesize to 200. With the previous
default value of 20 glanceclient was doing lots of
extra requests and schema validations.

Based on my tests no performance improvement was
seen over the pagesize of 200.

Change-Id: I6d740ca3a9b32bf5d064d3ea74273bb619b32ad4
Closes-Bug: #1987834

glanceclient/tests/unit/test_shell.py

@@ -711,7 +711,7 @@ class ShellTestWithNoOSImageURLPublic(ShellTestWithKeystoneV3Auth):
         glance_shell = openstack_shell.OpenStackImagesShell()
         glance_shell.main(args.split())
         self.assertEqual(self.requests.request_history[2].url,
-                         self.image_url + "v2/images?limit=20&"
+                         self.image_url + "v2/images?limit=200&"
                          "sort_key=name&sort_dir=asc")
 
 

glanceclient/tests/unit/v2/test_client_requests.py

@@ -35,7 +35,7 @@ class ClientTestRequests(testutils.TestCase):
         self.requests = self.useFixture(rm_fixture.Fixture())
         self.requests.get('http://example.com/v2/schemas/image',
                           json=schema_fixture)
-        self.requests.get('http://example.com/v2/images?limit=20',
+        self.requests.get('http://example.com/v2/images?limit=200',
                           json=image_list_fixture)
         gc = client.Client(2.2, "http://example.com/v2.1")
         images = gc.images.list()