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

@@ -16,7 +16,7 @@ LABEL maintainer="{{ maintainer }}" name="{{ image_name }}" build-date="{{ build
 RUN echo 'image on {{ base_distro }} is not yet available on non x86_64 platforms' \
     && /bin/false
 {% else %}
-RUN curl -o /usr/bin/skydive "https://github.com/skydive-project/skydive/releases/download/v0.26.0/skydive" \
+RUN curl -o /usr/bin/skydive "https://github.com/skydive-project/skydive/releases/download/v0.28.0/skydive" \
     && chmod +x /usr/bin/skydive
 {% endif %}
 

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>`__