Bump skydive version to 0.28

Skydive versions prior to 0.28.0 panic on newer versions of libc.
Fixed upstream in 0.28, see: skydive-project/skydive#2329
This should be backported to at least xena and yoga, as skydive is
currently not working with centos 8 on these releases.

Closes-Bug: #1940862
Change-Id: I177949b9319a977c9cd9121eb28b710256b72a5a
(cherry picked from commit 1f1214d)

docker/skydive/skydive-base/Dockerfile.j2

@@ -11,7 +11,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 {{ macros.configure_user(name='skydive') }}
 
 {% block skydive_version %}
-ARG skydive_version=0.26.0
+ARG skydive_version=0.28.0
 ARG skydive_url=https://github.com/skydive-project/skydive/releases/download/v${skydive_version}/skydive
 {% endblock %}
 

releasenotes/notes/bug-1940862-8fd12d669ab15299.yaml

@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fixes CentOS builds of Skydive SEGV on startup.
+    Skydive versions prior to 0.28.0 panic on newer versions of libc.
+    This especially affects Centos 8.
+    `LP#1940862 <https://launchpad.net/bugs/1940862>`__