Reconcile protobuf package names with paths

* Makes the import paths reflect the package namespaces.
  * This matters especially for import of protos defined here into
    infra/proto, as it avoids conflicts with paths local to infra/proto.

Various clients are affected in following ways:
* Protobuf:
  * import paths change from "api/*" -> "chromiumos/config/api/*"
  * package names unchanged
* Go: Unchanged
* Starlark:
  * protobuf load paths changed from "api/*" ->
    "chromiumos/config/api/*"
* Python:
  * In payload_utils: Via payload_utils/chromiumos, imports change
    import config.* -> import chromiumos.config.*
  * Inside Chrome OS SDK: The bindings are installed as a python package
    import config.* -> import chromiumos.config.*
* Recipe: import config.* -> import chromiumos.config.*

BUG=chromium:1069877
TEST=CQ


Change-Id: I158b3f4f4479058754ffcfd8c7e8eb85746b3d67
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/config/+/2144905
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Andrew Lamb <andrewlamb@chromium.org>
diff --git a/python/setup.py b/python/setup.py
index b82b424..39130ed 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -4,16 +4,16 @@
 
 from distutils.core import setup
 
-setup(name='config',
+setup(name='chromiumos',
       version='1.0',
       description='Module to access Config API python proto bindings',
-      packages=['config'],
-      package_data={'config': [
-          'api/*.py',
-          'api/software/*.py',
-          'api/software/**/*.py',
-          'payload/*.py',
-          'test/*.py',
-          'test/fake_program/*',
-          'test/fake_project/*',
+      packages=['chromiumos'],
+      package_data={'chromiumos': [
+          'config/api/*.py',
+          'config/api/software/*.py',
+          'config/api/software/**/*.py',
+          'config/payload/*.py',
+          'config/test/*.py',
+          'config/test/fake_program/*',
+          'config/test/fake_project/*',
       ]},)