Extract the cc and java sdk related tests out into their own file

Makes it easier for multiple people to work on different areas without
conflicts.

Bug: 143678475
Test: m conscrypt-module-sdk
Change-Id: I93140450c0b049946a9d0432225bccff82f5a873
diff --git a/Android.bp b/Android.bp
index 2cc6932..f72d624 100644
--- a/Android.bp
+++ b/Android.bp
@@ -508,6 +508,8 @@
         "sdk/update.go",
     ],
     testSrcs: [
+        "sdk/cc_sdk_test.go",
+        "sdk/java_sdk_test.go",
         "sdk/sdk_test.go",
         "sdk/testing.go",
     ],