fix: set authConfig before parsing annotations

[mrjoelkamp]

Summary

Set authConfig from annotations after setting it from agent attributes, so that the annotations take precedence.

Fixes

#456

[hashicorp-cla]

All committers have signed the CLA.

[tvoran]

Thanks! Left a couple comments, and it would be good to get some unit tests for this specific behavior.

[mrjoelkamp]

Thanks! Left a couple comments, and it would be good to get some unit tests for this specific behavior.

Thanks for the review! I added a unit test case for setting vault.hashicorp.com/auth-config-role in feat: add unit test for token_path

Confirmed that it fails prior to my changes and passes with these changes.

Running tool: /usr/local/bin/go test -timeout 30s -run ^TestAuthConfigAnnotations$ github.com/hashicorp/vault-k8s/agent-inject/agent

=== RUN   TestAuthConfigAnnotations
--- PASS: TestAuthConfigAnnotations (0.00s)
PASS
ok      github.com/hashicorp/vault-k8s/agent-inject/agent       0.471s

[tvoran]

Thanks for adding the test!