Fix Device Simulation setup script

[dluc]

Description and Motivation

1. fix scripts to work with other shells other than Bash
2. improve some common errors detection
3. sync scripts in the 2 solutions, with and without hub

Change type

• [x] Bug fix
• [ ] New feature
• [x] Enhancement
• [ ] Breaking change (breaks backward compatibility)

Checklist:

• [ ] All tests passed
• [ ] The code follows the code style and conventions of this project
• [ ] The change requires a change to the documentation
• [ ] I have updated the documentation accordingly

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This change is 

[dluc]

Scripts tested and working fine. The only issue I noticed is a missing "testing" tag in the docker-compose when deploying the branch with CLI, unrelated to this PR

[dluc]

@ppathan yes, these 2 PRs contain improvements/fixes that we should apply to other solutions:

• https://github.com/Azure/pcs-cli/pull/424
• https://github.com/Azure/pcs-cli/pull/425

1. Copy the new setup-wrapper.sh and change it to point to the relevant GitHub URL, note how it doesn't use set -ex to avoid leaking secrets
2. In the ARM template invoke setup-wrapper.sh (instead of setup.sh) and use bash instead of sh
3. From setup.sh take the retry logic used to install Docker and other minor improvements about error detection

Note that the setup now creates a log file under /app