DMTF Redfish-JsonSchema-ResponseValidator package install

Changes:
   - Refer: https://github.com/DMTF/Redfish-JsonSchema-ResponseValidator
     pip3 install jsonschema

Change-Id: If859c532a97f1e375a1a5e5a04ad11839bc692cb
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 b6990e4..527831c 100755
--- a/scripts/build-qemu-robot-docker.sh
+++ b/scripts/build-qemu-robot-docker.sh
@@ -82,7 +82,8 @@
 
 RUN pip3 install \
     beautifulsoup4 --upgrade \
-    lxml
+    lxml \
+    jsonschema
 
 RUN wget https://sourceforge.net/projects/ipmitool/files/ipmitool/1.8.18/ipmitool-1.8.18.tar.bz2
 RUN tar xvfj ipmitool-*.tar.bz2