Update git submodules

* Update glance from branch 'master'
  to 04dffb2a203029988bc97d8a277e24e304789706
  - Merge "Remove eventlet-specific functional tests"
  - Remove eventlet-specific functional tests

    This change removes eventlet-specific test files and functionality:
    - Deleted test_reload.py (SIGHUP, worker management, socket forking)
    - Deleted test_client_redirects.py (eventlet patching, wsgi.Server)
    - Deleted test_client_exceptions.py (eventlet patching, wsgi.Server)
    - Removed TestWSGIServer from test_wsgi.py (renamed to test_staging_cleanup.py)
    - Removed eventlet default threading model from __init__.py
    - Removed eventlet log level references

    All eventlet-specific tests have been removed while maintaining
    backward compatibility for FunctionalTest which still uses eventlet.

    Change-Id: Ief6a4b9ffa7a978b20967f8bcb1dfb39ad20e2e8
    Signed-off-by: Abhishek Kekane <akekane@redhat.com>

diff --git a/glance b/glance
index 06b80afa970510bb314aebb01657efef1844ded7..04dffb2a203029988bc97d8a277e24e304789706 160000 (submodule)
--- a/glance
+++ b/glance
@@ -1 +1 @@
-Subproject commit 06b80afa970510bb314aebb01657efef1844ded7
+Subproject commit 04dffb2a203029988bc97d8a277e24e304789706