add placeholder for queueing env

.ci/config.yml

@@ -8,6 +8,9 @@ builders:
     - dkrz/icon.gcc-6.4       : '.ci/bb/mistral-dkrz/test.icon.gcc-6.4.0'
     - dkrz/all.nag-6.2        : '.ci/bb/mistral-dkrz/test.all.nag-6.2.6223'
     - dkrz/all.gcc-6.4        : '.ci/bb/mistral-dkrz/test.all.gcc-6.4.0'
+    - config:
+      getAllocation: 'sbatch',
+      run: 'srun'
   cscs:
     - cscs/all.cray-11.0      : '.ci/bb/daint-cscs/test.all.cray-11.0.0'
     - cscs/all.pgi-20.1.1     : '.ci/bb/daint-cscs/test.all.pgi-20.1.1'