Expose tools/acloud for TF development

Bug: 31353457
Test: mma
Merged-In: I5c9a2cd3e692dbdf52c4f29cf4913495af046ac9
Change-Id: I5c9a2cd3e692dbdf52c4f29cf4913495af046ac9
(cherry picked from commit 8505cad54ba91728a347306e25120dbb221a4c48)

default.xml

@@ -625,6 +625,7 @@
   <project path="test/sts" name="platform/test/sts" groups="sts,pdk" />
   <project path="toolchain/benchmark" name="toolchain/benchmark" />
   <project path="toolchain/binutils" name="toolchain/binutils" />
+  <project path="tools/acloud" name="platform/tools/acloud" groups="tools,vts,pdk,tradefed" />
   <project path="tools/adt/idea" name="platform/tools/adt/idea" groups="notdefault,tools" />
   <project path="tools/apksig" name="platform/tools/apksig" groups="pdk,tradefed" />
   <project path="tools/base" name="platform/tools/base" groups="notdefault,tools" />