[OOM-CERT-SERVICE] Deprecate certServiceClient - update docs

- Remove certServiceClient description from docs
- Move descrption of CMPv2 provider to "How to use functionality"
- Update description of getting certs for CertService in OOM
- Update certService version to 2.4.0

Issue-ID: OOM-2744
Signed-off-by: Piotr Marcinkiewicz <piotr.marcinkiewicz@nokia.com>
Change-Id: I283755b8fbd579646f979c88ea3022266855c4dc

1 files changed, 48 insertions, 1 deletions

diff --git a/docs/sections/change-log.rst b/docs/sections/change-log.rst
index 71c5e118..41b23fad 100644
--- a/docs/sections/change-log.rst
+++ b/docs/sections/change-log.rst
@@ -1,11 +1,58 @@
 .. This work is licensed under a Creative Commons Attribution 4.0 International License.
 .. http://creativecommons.org/licenses/by/4.0
-.. Copyright 2020 NOKIA
+.. Copyright 2020-2021 NOKIA
 
 
 Change Log
 ==============
 
+--------
+Istanbul
+--------
+
+==============
+
+Version: 2.4.0
+--------------
+
+:Release Date:
+
+**New Features**
+
+  N/A
+
+**Bug Fixes**
+
+  N/A
+
+**Known Issues**
+
+  N/A
+
+**Security Notes**
+
+  N/A
+
+*Fixed Security Issues*
+
+  N/A
+
+*Known Security Issues*
+
+  N/A
+
+*Known Vulnerabilities in Used Modules*
+
+  N/A
+
+**Upgrade Notes**
+
+**Deprecation Notes**
+
+  CertService client is not supported since Istanbul release.
+
+**Other**
+
 ==============
 
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