Added release notes for release-7.8

Signed-off-by: Rinku Kothiya <rkothiya@redhat.com>

docs/release-notes/7.8.md

@@ -0,0 +1,36 @@
+# Release notes for Gluster 7.8
+
+This is a bugfix release. The release notes for [7.0](7.0.md), [7.1](7.1.md),
+[7.2](7.2.md), [7.3](7.3.md), [7.4](7.4.md) [7.5](7.5.md), [7.6](7.6.md) and [7.7](7.7.md)
+contain a listing of all the new features that were added
+and bugs fixed in the GlusterFS 7 stable release.
+
+**NOTE:**
+1. Next minor release tentative date: Week of 30th Nov, 2020.
+2. Next minor release would be the last release of release-7.x series.
+
+## Highlights of Release
+
+This release contains majorly the bug fixes as described in the issues section.
+
+## Builds are available at
+
+[https://download.gluster.org/pub/gluster/glusterfs/7/7.8/](https://download.gluster.org/pub/gluster/glusterfs/7/7.8/)
+
+## Issues addressed in this release
+
+Please find the list of issues added to this release below.
+
+- [#763](https://github.com/gluster/glusterfs/issues/763)  thin-arbiter: Testing report
+- [#1000](https://github.com/gluster/glusterfs/issues/1000) [bug:1193929] GlusterFS can be improved
+- [#1002](https://github.com/gluster/glusterfs/issues/1002) [bug:1679998] GlusterFS can be improved
+- [#1250](https://github.com/gluster/glusterfs/issues/1250) geo-rep: Fix corner case in rename on mkdir during hybrid crawl
+- [#1253](https://github.com/gluster/glusterfs/issues/1253) On Ovirt setup glusterfs performs poorly
+- [#1332](https://github.com/gluster/glusterfs/issues/1332) Unable to Upgrade to Gluster 7 from Earlier Version
+- [#1351](https://github.com/gluster/glusterfs/issues/1351) issue with gf_fill_iatt_for_dirent()
+- [#1354](https://github.com/gluster/glusterfs/issues/1354) High CPU utilization by self-heal on disperse volumes with no ...
+- [#1385](https://github.com/gluster/glusterfs/issues/1385) High CPU utilization by self-heal on disperse volumes when an ...
+- [#1407](https://github.com/gluster/glusterfs/issues/1407) glusterd keep crashing when upgrading from 6.5 to 7.7
+- [#1438](https://github.com/gluster/glusterfs/issues/1438) syncdaemon/syncdutils.py: SyntaxWarning: "is" with a literal. ...
+- [#1440](https://github.com/gluster/glusterfs/issues/1440) glusterfs 7.7 fuse client memory leak
+- [#1472](https://github.com/gluster/glusterfs/issues/1472) Readdir-ahead leads to inconsistent ls results

docs/release-notes/index.md

@@ -8,6 +8,7 @@ Release Notes
 - [8.0](./8.0.md)
 
 ### GlusterFS 7 release notes
+- [7.8](./7.8.md)
 - [7.7](./7.7.md)
 - [7.6](./7.6.md)
 - [7.5](./7.5.md)

mkdocs.yml

@@ -114,6 +114,7 @@ nav:
     - 8.1: release-notes/8.1.md
     - 8.0: release-notes/8.0.md
   - RELEASE 7.x:
+    - 7.8: release-notes/7.8.md
     - 7.7: release-notes/7.7.md
     - 7.6: release-notes/7.6.md
     - 7.5: release-notes/7.5.md