only upload api docs from master branch

[#78468272]
really only upload api docs from master branch

[#78468272]
Revert changes to execution_metadata behavior

Per discussion with the Diego team we decided to treat
execution_metadata as a black box. We'll be returning the start command
as a separate key in order to present that to the API user.

[#76096574]
Use detected_start_command from staging task to return on apps endpoint

[#76096574]
Render security group rules description in api docs as json

* new render_example_pre_tag flag on fields

[#76968924]
chmod app package to 0744 before sending it to the blobstore

[#78696734]
Extract the detected start command

* supports backward compatibility (i.e. it's not there)

[#79119400]

Signed-off-by: Matthew Sykes <matthew.sykes@gmail.com>
Add gemnasium file.

[#78973072]
Add public host in cc

[BUG] The message bus part do not work

[FIX] Use public host to register and generate blob url if possible