[v2] E2E test groundwork (#665)

This adds the groundwork for e2e testing the v2 branch. Try it with
`make test-e2e`.

I haven't enabled an assertion for the random-yaml stack because I
wasn't able to see it reliably reconcile. I was seeing GitHub rate limit
errors as well as errors from the operator when updating status on the
stack.

.github/workflows/v2-run-acceptance-tests.yaml

@@ -51,6 +51,6 @@ jobs:
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v4
         with:
-          file: agent/coverage.out
+          files: agent/coverage.out,operator/coverage.out
         env:
-          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

.gitignore

@@ -88,5 +88,4 @@ tags
 *.vsix
 ### IntelliJ ###
 .idea
-config/
-.envrc
+.envrc

.mise.toml

@@ -0,0 +1,9 @@
+[tools]
+golangci-lint = "1.58.1"
+etcd = "3.5.16"
+protoc-gen-go = "1.34.2"
+protoc-gen-go-grpc = "1.5.1"
+kubebuilder = "4.2.0"
+
+[settings]
+experimental = true    # Enable Go backend.

agent/.dockerignore

@@ -0,0 +1,5 @@
+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore build and test binaries.
+bin/
+*_test.go
+*.out