Build dependency wait on openjdk-7-jdk

[artmg]

The builds for Xenial and Yakkety raise a "Dependency Wait" issue containing the following in the logs

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 builddeps:nixnote2 : Depends: openjdk-7-jdk but it is not installable
E: Unable to correct problems, you have held broken packages.

[artmg]

Trying Commit da170aa