Whitelist jacocoagent for com.android.art

Used in coverage builds.

Test: NATIVE_COVERAGE=true \
      EMMA_INSTRUMENT_FRAMEWORK=true \
      EMMA_INSTRUMENT=true \
      m nothing

Change-Id: I6309d8149fce016eb9689326eeae221914e4c3bb

apex/apex.go

@@ -75,6 +75,7 @@ func makeApexAvailableWhitelist() map[string][]string {
 	// Module separator
 	//
 	m["com.android.art"] = []string{
+		"jacocoagent",
 		"libadbconnection_server",
 		"libartd-disassembler",
 		"libbacktrace",