[VOL-3348] Collecting CPU and Memory infos from running containers

Change-Id: Ib36e8edfb4e615e360628091ca6bf9520760d2c3
diff --git a/requirements.txt b/requirements.txt
index 12d06fb..1744c4f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,3 +11,4 @@
 git+https://github.com/zdw/robotframework-importresource@b81b87aabaee0594e966687b41e3674b866f28ee
 cord-robot==2.1.1
 virtualenv
+matplotlib==3.0.3