Add pagination to v1 image-list

* Use recursive generator function to make subsequent requests
  to the v1 detailed images resource
* 'limit' continues to act as the absolute limit of images to return
  from a list call
* 'page_size' indicates how many images to ask for in each subsequent
  pagination request
* Expose --page-size through the cli
* Convert v1 images tests to use strict url comparison
* Drop strict_url_check from FakeAPI kwargs - now the functionality
  is always active and tests must directly match fixture urls
* Fix bug 1024614

Change-Id: Ifa7874d88360e03b5c8aa95bfb9d5e6dc6dc927e

tests/utils.py

@@ -15,16 +15,13 @@
 
 
 class FakeAPI(object):
-    def __init__(self, fixtures, strict_url_check=False):
+    def __init__(self, fixtures):
         self.fixtures = fixtures
         self.calls = []
-        self.strict_url_check = strict_url_check
 
     def _request(self, method, url, headers=None, body=None):
         call = (method, url, headers or {}, body)
         self.calls.append(call)
-        if not self.strict_url_check:
-            url = url.split('?', 1)[0]
         return self.fixtures[url][method]
 
     def raw_request(self, *args, **kwargs):