Merge branch 'L2SS-994' into 'master'

L2SS-994: Add images to integration test readme

Closes L2SS-994

See merge request !448

tangostationcontrol/tangostationcontrol/integration_test/README.md

@@ -2,6 +2,10 @@
 
 Integration tests are separated into multi modules. Each module requires a
 different state and configuration. These configurations are managed externally.
+An overview of the entire layered setup of different integration test components
+is shown below
+
+![Integration Test Layers](../../docs/source/static/images/layered-setup.png)
 
 To minimize runtime overhead and memory pressure it is best to execute the
 dummy integration test module before any other container is created. This will
@@ -33,6 +37,18 @@ instead of through tox directly:
 make integration import.path.class.functionname`
 ```
 
+Since at each layer tests can be specified, the information amount selection
+modules and tests has to be passed down from the top layers to the ones below.
+To be able to understand the flow of this information the following diagram
+below is provided.
+
+![Integration Test Conveince](../../docs/source/static/images/layered-setup-pass.png)
+
+It should be noted that not all layers of the setup are convenient to interact
+with. Some should be avoided see diagram below.
+
+![Integration Test Conveince](../../docs/source/static/images/layered-setup-commands.png)
+
 ## Breakpoints & Debuggers with Integration Tests
 
 It can be extremely helpful to be able to mount a debugger during integration