temporary requirements file is added.

src/kpi_manager/requirements.in

+# Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
+#
+# 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.
+
+anytree==2.8.0
+APScheduler==3.10.1
+influx-line-protocol==0.1.4
+psycopg2-binary==2.9.3
+python-dateutil==2.8.2
+python-json-logger==2.0.2
+questdb==1.0.1
+requests==2.27.1
+xmltodict==0.12.0
+# grpc_health_probe==0.2.0 #getting error on this library
\ No newline at end of file