ci: add eu integration test flow (#461)

## Which problem is this PR solving?

This duplicates the existing integration test setup to run against our
newer EU infrastructure.

## Short description of the changes

I created a Terraform Provider team in the EU region and configured the
testacc setup and tests in the Action to take the honeycomb api endpoint
as an env var.

## How to verify that this has the expected result

You can see the integration tests successfully ran in US and EU on this
PR.


---
- To see the specific tasks where the Asana app for GitHub is being
used, see below:
  - https://app.asana.com/0/0/1205935108176450

.github/workflows/ci.yaml

@@ -34,8 +34,8 @@ jobs:
       - name: Build
         run: go build -v .
 
-  test:
-    name: Test
+  test-us:
+    name: Test US
     needs: build
     runs-on: ubuntu-latest
     timeout-minutes: 15
@@ -82,3 +82,55 @@ jobs:
         uses: codecov/codecov-action@v4.3.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
+
+  test-eu:
+    name: Test EU
+    needs: build
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    env:
+      TERRAFORM_VERSION: "1.0.11"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: "go.mod"
+          cache: true
+
+      - name: Setup test environment
+        env:
+          HONEYCOMB_API_ENDPOINT: https://api.eu1.honeycomb.io
+          HONEYCOMB_API_KEY: ${{ secrets.HONEYCOMB_API_KEY_EU }}
+          HONEYCOMB_DATASET: testacc
+        run: ./scripts/setup-testsuite-dataset
+
+      - name: Run client acceptance tests
+        timeout-minutes: 10
+        env:
+          HONEYCOMB_API_ENDPOINT: https://api.eu1.honeycomb.io
+          HONEYCOMB_API_KEY: ${{ secrets.HONEYCOMB_API_KEY_EU }}
+          HONEYCOMB_DATASET: testacc
+        run: go test -v -coverprofile=client-coverage.txt -covermode=atomic ./client/...
+
+      - uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: ${{ env.TERRAFORM_VERSION }}
+          terraform_wrapper: false
+
+      - name: Run TF acceptance tests
+        timeout-minutes: 10
+        env:
+          HONEYCOMB_API_ENDPOINT: https://api.eu1.honeycomb.io
+          HONEYCOMB_API_KEY: ${{ secrets.HONEYCOMB_API_KEY_EU }}
+          HONEYCOMB_DATASET: testacc
+          TF_ACC: 1
+          TF_ACC_TERRAFORM_VERSION: ${{ env.TERRAFORM_VERSION }}
+        run: go test -v -coverprofile=tf-coverage.txt -covermode=atomic ./internal/... ./honeycombio/...
+
+      - name: Generate Coverage Report
+        uses: codecov/codecov-action@v4.3.0
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}

scripts/setup-testsuite-dataset

@@ -3,9 +3,9 @@
 # the integration testsuite requires that a dataset and particular columns already exist
 # this little script handles that bit of bootstrapping in an idempotent fashion
 
-HONEYCOMB_API="${HONEYCOMB_API:=https://api.honeycomb.io}"
-COLUMNS_API="${HONEYCOMB_API}/1/columns"
-DATASETS_API="${HONEYCOMB_API}/1/datasets"
+HONEYCOMB_API_ENDPOINT="${HONEYCOMB_API_ENDPOINT:=https://api.honeycomb.io}"
+COLUMNS_API="${HONEYCOMB_API_ENDPOINT}/1/columns"
+DATASETS_API="${HONEYCOMB_API_ENDPOINT}/1/datasets"
 
 # a map of required columns for the integration tests and their types
 declare -A REQUIRED_COLUMNS=(