fixed to demoes test and docker container image

Change-Id: I786c4ef81caa8841c9e67e1b7584618ac0b64ac5
diff --git a/src/test/cord-api/Dockerfile.k8s-api-tester b/src/test/cord-api/Dockerfile.k8s-api-tester
index 75a68db..206c62c 100644
--- a/src/test/cord-api/Dockerfile.k8s-api-tester
+++ b/src/test/cord-api/Dockerfile.k8s-api-tester
@@ -18,7 +18,7 @@
 
 FROM python:2.7
 
-RUN pip install robotframework robotframework-requests pexpect \
+RUN pip install httpie robotframework robotframework-requests pexpect \
      robotframework-httplibrary robotframework-ride robotframework-kafkalibrary pygments pyyaml && \
     pip install -U requests && rm -rf /var/lib/apt/lists/*