e2e - Microsoft Azure (install)

[guidoiaquinti]

Description

Similar to #196 and #200 and #201, this PR brings an e2e test to deploy PostHog via Helm on Microsoft Azure (as requested in #183). It includes certificate signing using Let's Encrypt (see here for the certificate transparency log entries).

This is currently a WIP due to few issues I still didn't find a fix for:

1. the federated credentials config in Microsoft Active Directory doesn't let me configure to run actions from any branch in this repository (repo:PostHog/charts-clickhouse:ref:refs/heads/* doesn't seems to work, I've asked here)
2. the azure/login action doesn't seems to expose a way to increase the token session duration (I've opened an issue here)

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

How has this been tested?

CI should be passing.

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works

[marcushyett-ph]

Anything I can do to unblock this one?

[tiina303]

Note that we discussed this and might move Azure support to Beta to have smaller support plane as a whole. In this case we should remove the test to not be inclined to spend time on fixing them.

[hazzadous]

I going to close this to reduce the noise in this repo, if it's really important feel free to open again.