Fix deployment issues with MSSQL and PyPi mirrors

[craddm]

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⤴️ Summary

Pin packaging package version and fixes rsync typo in cloud-init for PyPi mirror servers.

🌂 Related issues

Closes #1581
Closes #1580

🔬 Tests

Fix for PyPi mirrors deployed on the GREEN SHM.

Fix for MSSQL issues deployed in T2 and T3 SREs.

[jemrobinson]

From co-working with @craddm