Advantages:
* Easier to tell why we need each package
* apt-get install output is less scary/huge
* CI job is split in more, smaller steps easier to debug
the `android` utility is pretty stupid, it doesn't really cache the
package index info. So each time it is run, it tries to fetch the
indexes from the network. This combines all android package installs
to a single command to make things run quicker.
