Tracker issue for migrating entire tooling to use vegeta.

[vishnuchalla]

This is a tracker issue to rewrite the entire tooling to use vegeta and index results to elastic search used for analysis. Tentative test plan: https://docs.google.com/document/d/1WeOqm_8AZkY51J-tHyuvqLMHNhVrfYygijTW1mIb2fs/edit#heading=h.66y4kqbj468a

List of PRs:

• https://github.com/quay/quay-performance-scripts/pull/51
• https://github.com/quay/quay-performance-scripts/pull/52
• https://github.com/quay/quay-performance-scripts/pull/53
• https://github.com/quay/quay-performance-scripts/pull/54
• https://github.com/quay/quay-performance-scripts/pull/55
• https://github.com/quay/quay-performance-scripts/pull/56
• https://github.com/quay/quay-performance-scripts/pull/57
• https://github.com/quay/quay-performance-scripts/pull/58
• https://github.com/quay/quay-performance-scripts/pull/59
• https://github.com/quay/quay-performance-scripts/pull/60
• https://github.com/quay/quay-performance-scripts/pull/63

[vishnuchalla]

Closing this issue as it is completed and the code is in stable state. There is more refactoring to be done which will be revisited later once we are done with profiling.