Merge changes I00b02c80,Icf854fba,I41a7ea89,I3c9b75ba

* changes:
  add instantiation flow
  add pre_instantiation details
  add the information of the instantiate in dev guide
  correct the camunda modeler info Introduce the instantiate flow details

1 files changed, 31 insertions, 0 deletions

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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 2017 AT&T Intellectual Property.  All rights reserved.
+
+
+Instantiate
+===========
+The following guides are provided to describe tasks that a user of
+ONAP may need to perform when instantiating a service.
+
+Instantiation includes the following topics:
+
+.. toctree::
+   :maxdepth: 2
+
+   Pre-instantiation operations <./pre_instantiation/index.rst>
+
+   Instantiation operation(s) <./instantiation/index.rst>
+
+
+**e2eServiceInstance** method is a hard-coded approach with dedicated/specific
+service BPMN workflow. That means it is linked to ONAP source code
+and lifecycle.
+
+**A La Carte** method requires the Operations actor to build and send
+a lot of operations. To build those requests, Operator actor needs to
+define/collect by himself all VNF parameters/values.
+
+**Macro** method required the Operations actor to build and send only one
+request and, thanks to CDS Blueprint templates, ONAP will collect and assign
+all required parameters/values by itself.