Cleanup old kernels before launching new ones.
Cleanup old kernels before launching new ones.

jdetle/nteract,jdetle/nteract,jdfreder/nteract,nteract/composition,nteract/nteract,temogen/nteract,nteract/nteract,temogen/nteract,jdetle/nteract,nteract/nteract,rgbkrk/nteract,jdetle/nteract,temogen/nteract,rgbkrk/nteract,0u812/nteract,captainsafia/nteract,0u812/nteract,nteract/nteract,captainsafia/nteract,nteract/composition,nteract/composition,jdfreder/nteract,rgbkrk/nteract,0u812/nteract,0u812/nteract,nteract/nteract,captainsafia/nteract,jdfreder/nteract,rgbkrk/nteract,jdfreder/nteract,captainsafia/nteract,rgbkrk/nteract