Revert "Feature 11071: Modular OSM installation. Remove charms, juju and lxd"

This reverts commit a0f0d8ef4f2aa0dd227ecb651002490b66498bab.

Change-Id: I92394e4074dad4e457c107c58e4ebc17d507f8b2
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/installers/charm/osm-update-db-operator/requirements.txt b/installers/charm/osm-update-db-operator/requirements.txt
new file mode 100644
index 0000000..b488dba
--- /dev/null
+++ b/installers/charm/osm-update-db-operator/requirements.txt
@@ -0,0 +1,16 @@
+# Copyright 2022 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+ops < 2.2
+pymongo == 3.12.3