Preserve ceph monitor order for overrides

Generated ceph monitor data is stored in a normal Python dict.
When iterating over it we don't have a guaranteed order.
Use OrderedDict to align to the database order.
This is needed to remove differences between app overrides.
Example of iteration:
Database may return 1,2,3, but adding these values into the dict, then
parsing the dict may result in iterating over 3,1,2.

Beside obvious optimization of not applying the apps again there is
one more reason for this change.
It was observed that a FluxCD apply operation was rejected by
kubernetes because the resource StorageClass parameters were changed.
Investigation based on collected logs showed the only diff between
overrides was the monitor order.

This was discovered in a Standard system upgrade scenario.
This needs to be patched back, and users need to re-apply
platform-integ-apps before starting the upgrade procedure.
Recommended procedure would be to remove, then apply
platform-integ-apps.

Tests on CentOS:
Using helm-override-show for rbd-provisioner and kubectl to describe
the storage classes. Monitors out of alignment. Patched
live Storage system, then monitors became correctly ordered.
Could apply platform-integ-apps without removing.

Tests on Debian:
Full Storage lab deployment.
Unlocked enabled available.

Closes-Bug: 1995352
Signed-off-by: Dan Voiculeasa <dan.voiculeasa@windriver.com>
Change-Id: I481eee9e79d4fdf0d17472fa11f3c085c25e34fc

sysinv/sysinv/sysinv/sysinv/common/storage_backend_conf.py

@@ -1,7 +1,7 @@
 # vim: tabstop=4 shiftwidth=4 softtabstop=4
 
 #
-# Copyright (c) 2016-2021 Wind River Systems, Inc.
+# Copyright (c) 2016-2022 Wind River Systems, Inc.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
@@ -14,6 +14,8 @@
 import ast
 import pecan
 
+from collections import OrderedDict
+
 from oslo_log import log
 from sysinv.common import constants
 from sysinv.common import exception
@@ -221,7 +223,7 @@ class StorageBackendConfig(object):
             hostif = '%s-%s' % (host, network_type)
             hostif2ph[hostif] = ph
         # map placeholder to ceph-mon ip address
-        ph2ipaddr = {}
+        ph2ipaddr = OrderedDict({})
         for addr in dbapi.addresses_get_all():
             if addr.name in hostif2ph:
                 ph = hostif2ph[addr.name]