Uploading apps via web UI doesn't work

[shatterednirvana]

When trying to upload the guestbook application via the AppLoadBalancer, the following exception is thrown:

Message about your submission:
/usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:92:in `initialize': No such file or directory - /root/.appscale/locations-appscalecgb6.json (Errno::ENOENT) 
from /usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:92:in `open' 
from /usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:92:in `read_file' 
from /usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:800:in `read_nodes_json' 
from /usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:757:in `get_all_public_ips' 
from /usr/local/appscale-tools/bin/../lib/../lib/common_functions.rb:156:in `update_locations_file' 
from /usr/local/appscale-tools/bin/../lib/appscale_tools.rb:377:in `upload_app' 
from /usr/local/appscale-tools/bin/appscale-upload-app:12

This is caused by a bug in the tools (AppScale/appscale-tools#20). Once we fix that, we should verify here that uploading apps works.

[shatterednirvana]

Sent a pull request on the tools that copies over the locations.json file that the above stack trace is looking for. With that fix, uploading apps now works (tested one node with guestbook app).