Add external/jacoco to the manifest

Bug: 26197469
Bug: 20115492
Change-Id: Ie581879db65a6a8aca47bfab4c10f9b9ab5985d4

default.xml

@@ -152,6 +152,7 @@
   <project path="external/iputils" name="platform/external/iputils" groups="pdk-cw-fs,pdk-fs" />
   <project path="external/iw" name="platform/external/iw" />
   <project path="external/jack" name="platform/external/jack" groups="pdk-cw-fs,pdk-fs" />
+  <project path="external/jacoco" name="platform/external/jacoco" />
   <project path="external/jarjar" name="platform/external/jarjar" groups="pdk" />
   <project path="external/javasqlite" name="platform/external/javasqlite" groups="pdk-cw-fs,pdk-fs" />
   <project path="external/javassist" name="platform/external/javassist" groups="pdk-cw-fs,pdk-fs" />