Merge branch 'feature/news_add' into 'master'

News section edited

See merge request !51

news/README.md

 # News
 
+**2021-04-13** OpenStack image `centos-8-1-1911-x86_64_gpu` deprecation in favor of `centos-8-x86_64_gpu`. Deprecated image will be still available for existing VM instances, but will be moved from public to community images in about 2 months.
+
 **2021-04-05** OpenStack images renamed
 
-**2020-03-31** User documentation update
+**2021-03-31** User documentation update
+
+**2020-07-24** Octavia service (LBaaS) released
+
+**2020-06-11** [Public repository](https://gitlab.ics.muni.cz/cloud/cloud-tools) where Openstack users can find usefull tools
+
+**2020-05-27** Openstack was updated from `stein` to `train` version
+
+**2020-05-13** Ubuntu 20.04 LTS (Focal Fossa) available in image catalog
+
+**2020-05-01** Released [Web page](https://projects.cloud.muni.cz/) for requesting Openstack projects