Remove legacy test setup

[briantist]

SUMMARY

This PR removes the "legacy" integration test option, that downloaded Vault and tinyproxy locally.

It provided ease of use, where contributors could simply rename the sample integration config and run tests, but it was very slow if you needed to run multiple targets. It's also tough to maintain.

I want to introduce additional software needed, such as MMock, an additional Vault instance or two (Agent mode, perhaps a separate writable instance), toxiproxy, possible an LDAP server, etc. Every one of these would require additional direct install support to continue supporting the legacy mode.

The docker-based localenv is much simpler to add additional software onto, as it's just a matter of additional containers to the config.

This PR also:

• fixes integration_tests - cleanup aliases #163
• pins macos runner to 10.15 (upcoming 11 won't seem to support virtualbox so we can't use docker on it)
• uses python 3.9 in the localenv tests

ISSUE TYPE

• CI/tests Pull Request

COMPONENT NAME

tests/CI

ADDITIONAL INFORMATION

[github-actions]

##Docs Build 📝

Thank you for contribution!✨

This PR has been merged and the docs are now incorporated into main:
https://community-hashi-vault-main.surge.sh

[codecov]

Codecov Report

Merging #191 (90737f3) into main (d46c544) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #191   +/-   ##
=======================================
  Coverage   91.69%   91.69%           
=======================================
  Files          40       40           
  Lines        1589     1589           
  Branches      122      122           
=======================================
  Hits         1457     1457           
  Misses        119      119           
  Partials       13       13           

Flag	Coverage Δ
env_docker-default	91.69% <ø> (ø)
integration	75.59% <ø> (ø)
sanity	37.65% <ø> (ø)
target_ansible-doc	100.00% <ø> (ø)
target_auth_approle	89.47% <ø> (ø)
target_auth_cert	86.36% <ø> (ø)
target_auth_jwt	91.30% <ø> (ø)
target_auth_none	100.00% <ø> (ø)
target_auth_token	71.42% <ø> (ø)
target_connection_options	74.76% <ø> (ø)
target_controller	66.62% <ø> (ø)
target_import	37.65% <ø> (ø)
target_lookup_hashi_vault	81.33% <ø> (ø)
target_lookup_vault_read	90.00% <ø> (ø)
target_module_utils	90.17% <ø> (ø)
target_module_vault_read	92.10% <ø> (ø)
units	88.79% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d46c544...90737f3. Read the comment docs.