Accept license terms prompt is not visible

[Fak3]

buildozer version: 0.39
python : 3.7

When log level is low or --verbose is false the license accept prompt is not visible in the shell, and it seems that the process is stuck. The last line is # Installing/updating SDK platform tools if necessary

When --verbose is added, the long license text becomes visible, but there is still no prompt in the end, asking for user input - you just have to guess that you have to type 'y' and hit enter.

related: #66 and #870

[tshirtman]

This is indeed a problem that a lot of new users seem to face, they can get stuck a long time, and if they ctrl-c it, i think they can get the issue of missing build-tools, which makes for another bad experience.