Implement controller client
- Probe, Manager, WorkflowRun classes are provided to interact with CORD Workflow Controller

Change-Id: I0ad8d3661864635d9701eab1cb089cb17f81cd50
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..83d1b7f
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+python-socketio[client]~=4.1.0