Add configure-baseline integration test

Author: smowton

go/ql/integration-tests/all-platforms/go/configure-baseline/src/a/vendor/avendor.go

@@ -0,0 +1 @@
+package abc

go/ql/integration-tests/all-platforms/go/configure-baseline/src/a/vendor/modules.txt

@@ -0,0 +1 @@
+package abc

go/ql/integration-tests/all-platforms/go/configure-baseline/src/b/vendor/bvendor.go

@@ -0,0 +1 @@
+package abc

go/ql/integration-tests/all-platforms/go/configure-baseline/src/b/vendor/modules.txt

@@ -0,0 +1 @@
+package abc

go/ql/integration-tests/all-platforms/go/configure-baseline/src/c/vendor/cvendor.go

@@ -0,0 +1,9 @@
+import os.path
+import json
+
+def test(codeql, go):
+    codeql.database.init(source_root="src")
+    baseline_info_path = os.path.join("test-db", "baseline-info.json")
+    with open(baseline_info_path, "r") as f:
+        baseline_info = json.load(f)
+    assert set(baseline_info["languages"]["go"]["files"]) == set(["root.go", os.path.join("c", "vendor", "cvendor.go")]), "Expected root.go and cvendor.go in baseline"