docker-maven-plugin: update to v0.28.0

The upstream support for arm64 docker builds
with the docker-maven-plugin came later so
we need to update the plugin version for jobs
to run on arm64 servers.

Change-Id: I1cdaaa09aaca2ec7873987830298d8771fd1286f
Issue-ID: VNFSDK-346
Signed-off-by: Paul Vaduva <Paul.Vaduva@enea.com>
diff --git a/pom.xml b/pom.xml
index c317632..6c011fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -57,7 +57,7 @@
                     <plugin>
                         <groupId>io.fabric8</groupId>
                         <artifactId>docker-maven-plugin</artifactId>
-                        <version>0.16.7</version>
+                        <version>0.28.0</version>
                         <configuration>
                             <verbose>true</verbose>
                             <apiVersion>1.23</apiVersion>