Add platform operations to user guides

Reference OOM cloud set up, quick start, and user guide
Top level User Guide wiki sections already migrated
See DOC-259 http:gerrit.onap.org/r/42333
Remove references to non-existing project sections.

Change-Id: I09f5faf019f76b3ccddaffa2b97f3efcf183a7f0
Issue-ID: DOC-250
Signed-off-by: Rich Bennett <rb2745@att.com>
diff --git a/docs/guides/onap-user/index.rst b/docs/guides/onap-user/index.rst
index 7b0420d..27338d6 100644
--- a/docs/guides/onap-user/index.rst
+++ b/docs/guides/onap-user/index.rst
@@ -14,6 +14,7 @@
    :maxdepth: 1
 
    platformadmin.rst
+   platformoperations.rst
    servicedesigner.rst
    servicecreator.rst
    vnfprovider.rst