Bump Gnocchi to 4.3.4

It includes several bug fixes, in particular one for an issue when
coordination is disabled [1].

[1] gnocchixyz/gnocchi#996

Change-Id: I0ac41463bd6ca1eb363e1c5cdc29f7222ec382b1

Author: priteau

kolla/common/config.py

@@ -373,7 +373,7 @@
                      'glance-18.0.1.tar.gz')},
     'gnocchi-base': {
         'type': 'git',
-        'reference': '4.3.2',
+        'reference': '4.3.4',
         'location': ('https://github.com/gnocchixyz/'
                      'gnocchi.git')},
     'heat-base': {

releasenotes/notes/upgrade-gnocchi-to-4.3.4-297be1fc7e3b3bd5.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Upgrades Gnocchi from 4.3.2 to 4.3.4. This version includes several bug
+    fixes, in particular one for `an issue when coordination is disabled
+    <https://github.com/gnocchixyz/gnocchi/issues/996>`__. This minor version
+    upgrade shouldn't require any intervention from the operator.