Appending new change-log (#900)

Co-authored-by: csmbot <karavi@dell.com>

CHANGELOG/CHANGELOG-1.8.0.md

@@ -6,11 +6,22 @@
 
 ### Features 
 
+- Unity XT: Storage Capacity tracking feature. ([#897](https://github.com/dell/csm/issues/897))
+- Enhancing Unity XT driver to handle API requests after the sessionIdleTimeOut in STIG mode. ([#891](https://github.com/dell/csm/issues/891))
+- Enhance GoPowerScale to support PowerScale Terraform Provider. ([#888](https://github.com/dell/csm/issues/888))
+- CSM 1.8 release specific changes. ([#885](https://github.com/dell/csm/issues/885))
 - Configurable Volume Attributes use recommended naming convention <prefix>/<name>. ([#879](https://github.com/dell/csm/issues/879))
 - Implement Volume Limits. ([#878](https://github.com/dell/csm/issues/878))
+- Make standalone helm chart available from helm repository : https://dell.github.io/dell/helm-charts. ([#877](https://github.com/dell/csm/issues/877))
+- CSI 1.5 spec : Implement Storage Capacity Tracking feature.. ([#876](https://github.com/dell/csm/issues/876))
 - CSM for PowerMax file support. ([#861](https://github.com/dell/csm/issues/861))
+- CSI-PowerFlex 4.0 NFS support. ([#763](https://github.com/dell/csm/issues/763))
+- CSM support for Openshift 4.13. ([#724](https://github.com/dell/csm/issues/724))
 - Use ubi-micro as base image. ([#790](https://github.com/dell/csm/issues/790))
 
 ### Bugs 
 
 - CSI driver does not verify iSCSI initiators on the array correctly. ([#849](https://github.com/dell/csm/issues/849))
+- Missing nodeSelector and tolerations entry in sample file. ([#890](https://github.com/dell/csm/issues/890))
+- Unit tests failing for CSI-PowerMax. ([#887](https://github.com/dell/csm/issues/887))
+- Common section for Volume Snapshot Requirements. ([#811](https://github.com/dell/csm/issues/811))