Create a directory with no write perms for TestAndroidConfigUtil.

Review Request #1796 - Created Feb. 19, 2015 and submitted

Mateo Rodriguez
jinfeng, jsirois
The original test assumed we would have no write permissions outside
of home, which turned out not to be a safe assumption.

I added the IOError to the exception catch in AndroidConfigUtil.
The OSError is raised from the safe_open, if there is no
permission to make dirs. The IOError is for cases where the
directories exist but pants does not have permission to write there.

PANTS_DEV=1 ./pants test tests/python/pants_test/android::
Travis passed:

David Turner
Mateo Rodriguez
Jin Feng
Tejal Desai
Mateo Rodriguez
Mateo Rodriguez
Review request changed

Status: Closed (submitted)

John Sirois
Thanks for the robustification.