feat: update links for sceptre and related efforts

Author: timyardley

tools/testbeds/README.md

@@ -5,9 +5,15 @@ Developed as a community asset
 ## Platforms
 
 - [melody](https://github.com/iti/melody) - a TestBed which integrates Power System Simulation with Mininet to simulate a Micro Grid control Architecture. This TestBed was used for Anomaly Detection Purposes.
-- [minimega](https://github.com/sandia-minimega/minimega) - minimega is a tool for launching and managing virtual machines.
 - [NREL CEE](https://www.nrel.gov/docs/fy20osti/74142.pdf) - NREL’s Cyber-Energy Emulation Platform for Research and System Visualization built upon Minimega and SCEPTRE.
-- [SCEPTRE](https://www.osti.gov/servlets/purl/1376989) - Sandia National Labs SCEPTRE provides a cyber-physical environment to analyze how cyber-initiated events affect the physical world.
+- [SCEPTRE](https://www.sandia.gov/app/uploads/sites/122/2021/09/SCEPTRE_SAND2019-11907M.pdf) - Sandia National Labs SCEPTRE provides a cyber-physical environment to analyze how cyber-initiated events affect the physical world. Over-arching effort for minimega, phenix, and various plugins.
+- [minimega](https://github.com/sandia-minimega/minimega) - minimega is a tool for launching and managing virtual machines.
+- [Phenix](https://github.com/sandialabs/sceptre-phenix) - phenix is an orchestration tool and GUI for Sandia's minimega platform
+- [phenix-apps](https://github.com/sandialabs/sceptre-phenix-apps) - Apps written to work with the latest version of phenix 
+- [phenix-images](https://github.com/sandialabs/sceptre-phenix-images) - phenix image is a tool for quickly creating vm images with debian-based OSes
+- [phenix-topologies](https://github.com/sandialabs/sceptre-phenix-topologies) - Topologies created to work with the latest version of phenix 
+- [sceptre-bennu](https://github.com/sandialabs/sceptre-bennu) - Modeling and simulation application for ICS.
+
 
 ## Systems
 - [ICS TestBed Framework](https://github.com/PMaynard/ICS-TestBed-Framework) - A scalable framework for automatically deploying locally (or remotely) a number of virtual machines that replicate a Supervisory Control And Data Acquisition (SCADA) network is proposed.
@@ -22,6 +28,7 @@ Developed as a community asset
 - [ICSSIM](https://github.com/AlirezaDehlaghi/ICSSIM) - A Framework for Building Industrial Control Systems Security Simulation Testbeds, [Paper](https://arxiv.org/abs/2210.13325)
 
 
+
 ## Survey
 
 - [Industrial Control Systems Testbed Survey](https://spritz.math.unipd.it/projects/ics_survey/) - This page aims to collect and share the current state of the art Industrial Control Systems (ICS) Testbed and Datasets developed for security research. We think that this collection can help the ICS security community see the current research trend worldwide and find useful information to support future studies. [paper here](https://arxiv.org/abs/2102.05631)