Add framework-sdkextensions to jars to instrument

Required to get code coverage.

Bug: 143937446
Test: verify LOCAL_SOONG_JACOCO_REPORT_CLASSES_JAR is set
      for framework-sdkextensions
Change-Id: I2cdb8ce60939a91f8473c2ddd2a8ff198cd7c92e
diff --git a/java/config/config.go b/java/config/config.go
index 88d9411..7a86916 100644
--- a/java/config/config.go
+++ b/java/config/config.go
@@ -46,8 +46,10 @@
 		"core-icu4j",
 		"core-oj",
 		"core-libart",
+		// TODO: Could this be all updatable bootclasspath jars?
 		"updatable-media",
 		"framework-mediaprovider",
+		"framework-sdkextensions",
 		"ike",
 	}
 )