Correct websocket install

The websocket-client package is the correct python package needed for
the robot framework websocket tests.

Change-Id: I7cd4ce70ada67e92bdc5ad8fc7edbfbc2ac11319
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/scripts/build-qemu-robot-docker.sh b/scripts/build-qemu-robot-docker.sh
index 3c195ab..a46b539 100755
--- a/scripts/build-qemu-robot-docker.sh
+++ b/scripts/build-qemu-robot-docker.sh
@@ -71,7 +71,7 @@
     tox \
     requests \
     retrying \
-    websocket \
+    websocket-client \
     json2yaml \
     robotframework \
     robotframework-requests \