ENH: add "print_level" key word in "global" section to ase.calculators.cp2k

Merged username-removed-1599604 requested to merge riddlezyc/ase:ase_yingchun_zhang into master

add "print_level" key word in "global" section to ase.calculators.cp2k the keyword is tested in test/cp2k/cp2k_GeoOpt.py