Previously, checking if an app was deployed actually checked if there were any running processes. This is not only incorrect, but also fails to take into account applications that do not have running processes and are only used for one-off commands.
This fix migrates apps to the new "deployed" property which is set in core-post-deploy. The result is a slightly faster "deployed" check that is correct and allows non-scaled apps to actually work.
Closes#4398
This will reduce the size of binaries in exchange for worse debugging output. This is acceptable for our users and worth it to save money on packagecloud package hosting - which is currently free under a given repository size.
Rather than reimplementing the property functions in two different languages - and potentially having compatibility issues - standardize on golang for the implementation through the use of a generated binary.
This also implements all the list functions for use with shell-based plugins.
Note that the interface to the prop binary is experimental, and it should not be used directly.
