Add tests for ctx.InstallFile

Add tests that cover Soong-only installation as well as installation with
InstallBypassMake.

Bug: 204136549
Test: TestInstall
Test: TestInstallBypassMake
Change-Id: Iac22c9fdf99994e06b419623ee5fa399ef6957fb
diff --git a/android/Android.bp b/android/Android.bp
index 6450a06..cfa2be3 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -19,6 +19,9 @@
         "soong-ui-metrics_proto",
         "golang-protobuf-proto",
         "golang-protobuf-encoding-prototext",
+
+        // Only used for tests.
+        "androidmk-parser",
     ],
     srcs: [
         "androidmk.go",