Added common deployment scripts for CFN, GDM and ARM.

[baba230896]

Original issue: Migrate to use common utilities repo instead of self contained scripts

• Added common scripts for CFN, ARM, and GDM in common_scripts/ folder.

1. create_universe.sh
2. install_software.sh

• Removed dedicated scripts for ARM from azure_scripts folder.
• Well-tested with CFN, ARM, and GDM. However, repo' needs some modification to work with common scripts. Below-mentioned links are of related PRs:
  • aws-cloudformation
  • azure-resource-manager
  • gcp-deployment-manager

[iSignal]

If you have not already, I would recommend running shellcheck on the bash script to identify any bugs.

[iSignal]

Merging it for now so that the cloudformation repo works properly. One action item in a new PR would be to add some comments explaining that the create_universe script in common_scripts runs on each node invidually and does the master addresses computation locally (so the order of IPs passed in as params has to be the same across all the nodes).

[baba230896]

Sure @iSignal
We'll keep this in mind and update it with the next PR.