Set noparent in connectivity CTS owners

Also reorganize the files to have one toplevel CTS owners file, and only
additional owners in subdirectories.

Change-Id: I28ce193896e1ade2034589327805870774a4d608
Test: m
diff --git a/tests/cts/hostside/OWNERS b/tests/cts/hostside/OWNERS
index 52c8053..20bc55e 100644
--- a/tests/cts/hostside/OWNERS
+++ b/tests/cts/hostside/OWNERS
@@ -1,4 +1,4 @@
 # Bug component: 61373
+# Inherits parent owners
 sudheersai@google.com
-lorenzo@google.com
 jchalard@google.com