Update debian config to ignore testing during the deb-packaging process
Update debian config to ignore testing during the deb-packaging process

I've rechecked that the debian packaging process is still working as intended despite the recent changes to the directory structure. For a brief recap, the single steps were executed as follows:
1.) create a tar-ball (*.tar.gz) as source-package via 'make dist'
2.) execute 'dh_make -f cpu-energy-meter-1.1-dev.tar.gz -p cpu-energy-meter_1.1-dev'
      after pressing enter, confirm the following by pressing -s for single binary and enter
      return
3.) Note that in debian/changelog, the distribution value must be changed to something like
      'unstable' or 'experimental' for example
4.) Create the deb-package with 'dpkg-buildpackage -b -us -uc'. The files will be created
      one level above the current dir (i.e., in '../')
5.) [Optional] The deb-file can be additionally checked for errors by using lintian:
      'lintian cpu-energy-meter_*.deb'
6.) Finally, install the debian-package via 'sudo dpkg -i cpu-energy-meter_*.deb'

sosy-lab/power-gadget_benchexec,sosy-lab/power-gadget_benchexec