[WIP] Add docs for fabric testing

Change-Id: I7045977b482d498f1225b582812974e39e85d947
diff --git a/index.rst b/index.rst
index 7644781..bcd7be7 100644
--- a/index.rst
+++ b/index.rst
@@ -44,6 +44,7 @@
    testing/about_system_tests
    testing/acceptance_specification
    testing/pdp_testing
+   testing/fabric_testing
 
 .. toctree::
    :maxdepth: 1