Updating cord-tester to 2.1.6

Change-Id: Ifdadf4530f03de7dd4bd520fc129f7e26a89cd49
diff --git a/requirements.txt b/requirements.txt
index f24cad4..9d78f8e 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@
 yamllint==1.23.0
 # replace when we can use upstream (needs python 3.6)
 git+https://github.com/zdw/robotframework-importresource@b81b87aabaee0594e966687b41e3674b866f28ee
-cord-robot==2.1.4
+cord-robot==2.1.6
 virtualenv
 matplotlib>=3.0.3
 requests==2.24.0