Mark conscrypt apex as compressible

Bug: 169780183
Test: presubmit
Change-Id: I0431bc5d608edfe7e5dad739c6316201b2932d60
diff --git a/apex/Android.bp b/apex/Android.bp
index 2a7d225..ab19534 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -37,6 +37,9 @@
     },
     key: "apex.conscrypt.key",
     certificate: ":com.android.conscrypt.certificate",
+    // Indicates that pre-installed version of this apex can be compressed.
+    // Whether it actually will be compressed is controlled on per-device basis.
+    compressible: true,
 
     // IMPORTANT: For the APEX to be installed on Android 10,
     // min_sdk_version should be 29. This enables the build system to make