chromite: COIL class and method names refactor

Initial pass at COIL changes to update Chromite code to use more
inclusive language.  This pass will cover classes and method names.

BUG=chromium:1118471,chromium:1118468,chromium:1118471,chromium:1118458,chromium:1118429,chromium:1118427,chromium:1118420,chromium:1118418
TEST=`manual tryjob on stabilize branch`

Change-Id: I71835550c69e0f2043e8272c9f955b3edaa37a6f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2824007
Reviewed-by: Dhanya Ganesh <dhanyaganesh@chromium.org>
Tested-by: Mike Nichols <mikenichols@chromium.org>
(cherry picked from commit d7d0cb93793f728e0b8843000031c7955c24c2a9)
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/2826388
Reviewed-by: Julio Hurtado <juahurta@google.com>
Commit-Queue: Mike Nichols <mikenichols@chromium.org>
diff --git a/scripts/gerrit.py b/scripts/gerrit.py
index c078349..d59eb76 100644
--- a/scripts/gerrit.py
+++ b/scripts/gerrit.py
@@ -410,7 +410,7 @@
       return _Query(opts, cl, raw=False, helper=helper)
 
     transitives = _BreadthFirstSearch(
-        cls, functools.partial(self._Children, opts, _QueryChange),
+        cls, functools.partial(self._Nodes, opts, _QueryChange),
         visited_key=lambda cl: cl.PatchLink())
 
     # This is a hack to avoid losing GoB host for each CL.  The PrintCls
@@ -456,7 +456,7 @@
           yield change
 
   @classmethod
-  def _Children(cls, opts, querier, cl):
+  def _Nodes(cls, opts, querier, cl):
     """Yields the Gerrit dependencies of a patch"""
     for change in cls._ProcessDeps(
         opts, querier, cl, cl.GerritDependencies(), False):