android.security.*: use versions for imports (2)

This makes sure that when developers add a new version of an interface,
or when interfaces are being frozen, the runtime/buildtime situation of
clients depending on those interfaces remains the same. This is required
for AIDL to continue working at scale.

Bug: 188871598
Test: build
Change-Id: I8c6c0e279ef56b7ae06d5621a772e7abc8163a59
diff --git a/keystore2/aidl/Android.bp b/keystore2/aidl/Android.bp
index 5416024..63e19b0 100644
--- a/keystore2/aidl/Android.bp
+++ b/keystore2/aidl/Android.bp
@@ -132,7 +132,7 @@
     name: "android.security.maintenance",
     srcs: [ "android/security/maintenance/*.aidl" ],
     imports: [
-        "android.system.keystore2",
+        "android.system.keystore2-V1",
     ],
     unstable: true,
     backend: {