Ability to provide real-time feedback in CLI and GUI upon request

Change-Id: I0476d5ccb4eb58373e1ef9e273aed9b8a35728fe
Signed-off-by: Francisco-Javier Ramón Salguero <javier.ramon@telefonica.com>

diff --git a/Release6/Ability to provide real-time feedback.md b/Release6/Ability to provide real-time feedback.md
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+# Ability to provide real-time feedback in CLI and GUI upon request
+
+## Proposer
+
+- Gerardo Garcia (Telefonica)
+- Alfonso Tierno (Telefonica)
+- Francisco Javier Ramon (Telefonica)
+
+## Type
+
+**Feature**
+
+## Target MDG/TF
+
+IM-NBI, LCM, CLI, LW-GUI (optional)
+
+## Description
+
+Currently, OSM's CLI (and OSM's GUI to some extent) follow a similar behaviour 
+to OSM's NBI, returning control to the user immediately after a request has 
+been made, although OSM is still being processed by OSM behind the scenes, so 
+the user needs to poll the system to learn (i.e. running commands) when the 
+request has been completely processed. While this behaviour is reasonable as 
+regular practice, it still presents some limitations in terms of usability:
+
+- It makes more complicated to follow the progress of a given operation or 
+whether it is stuck at any step, particularly when the requested operation is 
+complex (e.g. instantiate a large NS).
+- It makes even more complicated to relate the processes during the operation 
+with other asynchronous events (e.g. error messages) that may happen during the 
+operation and explain better its progress and/or results.
+
+The current proposal is adding an option `--wait` to selected CLI commands so 
+that they do not return the control immediately, but keep it until the 
+operation is completed, reporting meanwhile the progress in the operation and, 
+if appropriate, relevant events that may facilitate diagnosis/troubleshooting.
+
+As a minimum, the commands for NS instantiation and NST instantiation should 
+support this option. Likewise, LW-GUI might support the same mode for 
+equivalent operations.
+
+## Demo or definition of done
+
+Possibility to use the `--wait` option for an NS/NSI creation that keeps 
+control and reports the progress of the operation in terms of:
+
+- VMs/VDUs created, VLs created and bar of progress (e.g. "VM 7/24: 'CTRL_1' 
+VDU of 'Router_7' VNF created").
+- Stage of instantiation where the process is (e.g. "starting NS day-1", 
+"Starting 'Router_2' day-1", etc. ).
+- Timely report any other relevant event that might occur in the middle of the 
+operation.
+