Docs/robot integers (azimuth-cloud#192)

* Add tip to describe value coercion

* Revert linting

* Implement requested changes

Author: jjo93sa

docs/deployment/testing.md

@@ -264,6 +264,15 @@ generate_tests_caas_test_case_{cluster_type}_service_{service_name}_expected_tit
 generate_tests_caas_test_case_{cluster_type}_verify_timeout: "45 minutes"
 ```
 
+!!! tip  "Coerce a value to something other than a string"
+
+    By default  Robot Framework coerces values to strings. Robot Framework can be instructed to treat
+    the value literally using the syntax "${x}", for example:
+
+    ```yaml  title="environments/my-site/inventory/group_vars/all/tests.yml"
+    # Make Robot Framework treat the override as an integer, not a string
+    generate_tests_caas_test_case_{cluster_type}_param_{parameter_name}: "${42}"
+ 
 !!! warning
 
     If the cluster type or service name contain dashes (`-`), they will be replaced with