Add documentation for APPC Legacy actor

Added documentation for APPC Legacy actor.
Also added place-holders for the other actors.

Issue-ID: POLICY-2515
Change-Id: I99af500ae36ea92a2aa8a9e75da5fc36982a63c6
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/docs/development/actors/actors.rst b/docs/development/actors/actors.rst
index 160f2cc..7721088 100644
--- a/docs/development/actors/actors.rst
+++ b/docs/development/actors/actors.rst
@@ -9,4 +9,12 @@
     :maxdepth: 1
 
     overview.rst
+    aai/aai.rst
+    appc-legacy/appc-legacy.rst
+    appclcm/appclcm.rst
     cds/cds.rst
+    guard/guard.rst
+    sdnc/sdnc.rst
+    sdnr/sdnr.rst
+    so/so.rst
+    vfc/vfc.rst