trivial: add noqa markers to new pylint warnings

tests/test_ctl.py

@@ -58,6 +58,7 @@ def teardown_module(module):
 def test_loading():
     ctl = wcs.qommon.ctl.Ctl(cmd_prefixes=['wcs.ctl'])
     ctl.load_all_commands(ignore_errors=False)
+    # noqa pylint: disable=consider-iterating-dictionary
     assert 'shell' in ctl.get_commands().keys()
     # call all __init__() methods
     for cmd in ctl.get_commands().values():

tests/test_fields.py

@@ -27,6 +27,7 @@ def setup_module(module):
 
 
 def teardown_module(module):
+    # noqa pylint: disable=global-variable-not-assigned
     global pub
     shutil.rmtree(pub.APP_DIR)
 

wcs/root.py

@@ -222,6 +222,7 @@ class StaticsDirectory(Directory):
                     pass
 
     def _q_traverse(self, path):
+        # noqa pylint: disable=consider-iterating-dictionary
         if path[0] in self.static_directories.keys():
             prefix, rest = path[0], path[1:]
         else: