Bump version number from 2.0.5 to 2.0.6
Bump version number from 2.0.5 to 2.0.6

Since package name and application id have been changed again,
it's better to bump the version number to avoid confusion.

Change-Id: I7c02246d4aa638168acd8ba7a1e727720e08c5ba

googlesamples/android-testdpc,googlesamples/android-testdpc