MAC address fix

[catherinemeadows]

Fixes the load_generator bug mentioned in #222

Summary:

In order to resolve the issue where the "Failed to obtain MAC address" error is raised in the load_generator NF, the function onvm_get_fake_macaddr() is used to obtain a fake MAC address for testing or in the case that the provided MAC address of the port is not bound to DPDK.

Usage:

This PR includes
Resolves issues
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:

Ran the load_generator NF with the MAC address of the node I am testing with. I had @sreya519 run this fix for the load_generator as well since she experienced this error.

Review:

@sreya519 --> tested the load_generator fixes already

[onvm]

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[onvm]

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[EthanBaron14]

@onvm try again?

[onvm]

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[onvm]

@onvm try again?

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Error: ERROR: Failed to post results to GitHub

[catherinemeadows]

@onvm is this working now?

[onvm]

@onvm is this working now?

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[catherinemeadows]

speed_tester has the same setup. Should we add the same print to it as well? @dennisafa

[kevindweb]

@catherinemeadows I think it would be useful to have a print statement like this one in speed_tester

[dennisafa]

Agreed - sorry I missed this comment. A comment wherever we fake it is a good idea.