DPDK Missing Python Dependencies

[sreyanalla]

Addresses DPDK Dependencies (Issue #161 )

Summary:

Resolves potential issues as described in #161 . All scripts/*.py files have been updated to use Python3 rather than Python2. Install.md was updated to include Python3 as a dependency and provides a guide on how to install it on your machine.

Usage:

This PR includes
Resolves issues	#161
Breaking API changes
Internal API changes
Usability improvements
Bug fixes	👍
New functionality
New NF/onvm_mgr args
Changes to starting NFs
Dependency updates	👍
Web stats updates

Merging notes:

• Dependencies: None

TODO before merging :

• [X] PR is ready for review

Test Plan:

Compiled the scripts/*.py files using Python3 and ran the manager with a few NFs to make sure expected output was achieved. I tried to create a bare metal profile with CloudLab so that I could specifically replicate the issue being resolved. The goal was to install ONVM on a machine without any version of python to ensure that the provided python installation instructions are fully functional and that the scripts run as intended.

[onvm]

In response to PR creation

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[kevindweb]

Thanks for working on this! I usually think it looks cleaner to write functions like this

print(args)

instead of

print (args)

Purely nitpicking but we probably want to be consistent if we're going to clean up these files.

[bdevierno1]

Looks good to me 👍 @sreya519

[kevindweb]

@onvm ci was aborted last time

[onvm]

@onvm ci was aborted last time

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[bdevierno1]

@onvm

[onvm]

@onvm

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