Added design time specifications in doc

Change-Id: Idb6a627b1c270a503d61287dd9078e93b48ceaf0
Issue-ID: CCSDK-1221
Signed-off-by: Ezhilarasi <ezhrajam@in.ibm.com>

diff --git a/docs/designtime.rst b/docs/designtime.rst
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. Copyright (C) 2019 IBM.
+
+Design Time User Guide
+======================
+
+Bellow are the requirements to enable automation for a service within ONAP.
+
+For instantiation, the goal is to be able to automatically resolve all the HEAT/Helm variables, called cloud parameters.
+
+For post-instantiation, the goal is to configure the VNF with initial configuration.
+
+Prerequisite
+============
+
+* Gather the cloud parameters:
+
+instantiation:
+
+Have the HEAT template along with the HEAT environment file. 
+
+or
+
+Have the Helm chart along with the Values.yaml file
+
+(CDS supports, but whether SO → Multicloud support for Helm/K8S is different story)
+
+
+Post-instantiation:
+
+Have the configuration template to apply on the VNF.
+
+* XML for NETCONF
+* JSON / XML for RESTCONF
+* not supported yet - CLI
+* JSON for Ansible [not supported yet]
+
+*Identify which template parameters are static and dynamic
+*Create and fill-in the a table for all the dynamic values
+
+While doing so, identify the resources using the same process to be resolved; for instance, if two IPs has to be resolved through the same IPAM, the process the resolve the IP is the same.
+
+
+Services:
+=============
+
+.. toctree::
+   :maxdepth: 1
+   
+   CBA/index
+   datadictionary/index
+   resourceassignment
+   component
+   template
+   resquirement