Disable embedded_launcher on acloud

And make acloud_test work with embedded_launcher.

Acloud doesn't work with embedded_launcher due to httplib2 reaching
out to files, but I haven't fully debugged why it does that.

Bug: 331488610
Fixes: 336459249
Test: atest --host acloud_test and running acloud-dev create
Change-Id: Ia01586a8b64fcc137c31c9d78dba42647282a81b
3 files changed