Add pip3 install redfish_utilities for DMTF Redfish-Usecase-Checkers

Reference https://github.com/DMTF/Redfish-Usecase-Checkers#prerequisites

Change-Id: I913bfd77c00e6c539d6909f7e31d057f3db1fc08
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/scripts/build-qemu-robot-docker.sh b/scripts/build-qemu-robot-docker.sh
index a46b539..fa00e4d 100755
--- a/scripts/build-qemu-robot-docker.sh
+++ b/scripts/build-qemu-robot-docker.sh
@@ -82,7 +82,8 @@
     beautifulsoup4 --upgrade \
     lxml \
     jsonschema \
-    redfishtool
+    redfishtool \
+    redfish_utilities
 
 RUN grep -q ${GROUPS} /etc/group || groupadd -g ${GROUPS} ${USER}
 RUN grep -q ${UID} /etc/passwd || useradd -d ${HOME} -m -u ${UID} -g ${GROUPS} \