workflows: add a workflow to run end-to-end tests

Add a dedicated 'test.yml' workflow that executes the end-to-end tests.
Unlike CI, these tests are only run automatically for pull requests
(although they can be manually triggered via workflow dispatch). By default,
the tests will run with the "default" profile; this can be changed via an
input variable in the workflow dispatch.

Because the end-to-end tests deal with external dependencies (namely, Git),
add an 'install-dependencies.sh' script to install and configure the
dependencies on a GitHub Actions runner.

The goal of this workflow is for it to eventually be used to run multiple
types of long-running tests, such as integration tests or installer
validation tests.

Signed-off-by: Victoria Dye <vdye@github.com>

Author: vdye

.github/workflows/test.yml

@@ -0,0 +1,41 @@
+name: End-to-end test
+
+on:
+  pull_request:
+  workflow_dispatch:
+    inputs:
+      run-all:
+        type: boolean
+        description: 'Include tests that are excluded by default due to slowness'
+        default: false
+
+jobs:
+  e2e-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Clone repository
+        uses: actions/checkout@v3
+
+      - name: Setup Go
+        uses: actions/setup-go@v3
+        with:
+          go-version-file: 'go.mod'
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Install system dependencies for end-to-end tests
+        run: build/ci/install-dependencies.sh
+        shell: bash
+
+      - name: Enable perf tests
+        if: ${{ github.event.inputs.run-all }}
+        run: echo "E2E_FLAGS='--all'" >> $GITHUB_ENV
+
+      - name: Run end-to-end tests
+        env:
+          E2E_FLAGS: ${{env.E2E_FLAGS}}
+        run: make e2e-test E2E_FLAGS="$E2E_FLAGS"

build/ci/install-dependencies.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+die () {
+	echo "$*" >&2
+	exit 1
+}
+
+# Exit as soon as any line fails
+set -e
+
+# Install latest version of Git (minimum v2.40)
+if command -v apt >/dev/null 2>&1; then
+	sudo add-apt-repository ppa:git-core/ppa
+	sudo apt update
+	sudo apt -q -y install git
+elif command -v brew >/dev/null 2>&1; then
+	brew install git
+else
+	die 'Cannot install git'
+fi
+
+# Set up test Git config
+git config --global user.name "GitHub Action"
+git config --global user.email "action@github.com"