Merge branch 'fix-catboost-env' into 'master'

fragments/packages/LCG_97-x86_64-centos7-clang8-dbg.cmake

fragments/packages/LCG_97-x86_64-centos7-clang8-opt.cmake

fragments/packages/LCG_97-x86_64-centos7-gcc9-dbg.cmake

fragments/packages/LCG_97-x86_64-centos7-gcc9-opt.cmake

...ents/packages/LCG_97_LHCB_1-x86_64-centos7-gcc9-dbg.cmake

...ents/packages/LCG_97_LHCB_1-x86_64-centos7-gcc9-opt.cmake

fragments/packages/LCG_97a-x86_64-centos7-clang10-dbg.cmake

fragments/packages/LCG_97a-x86_64-centos7-clang10-opt.cmake

fragments/packages/LCG_97a-x86_64-centos7-clang8-dbg.cmake

fragments/packages/LCG_97a-x86_64-centos7-clang8-opt.cmake

fragments/packages/LCG_97a-x86_64-centos7-gcc9-dbg.cmake

fragments/packages/LCG_97a-x86_64-centos7-gcc9-opt.cmake

.../packages/LCG_97apython3-x86_64-centos7-clang10-dbg.cmake

.../packages/LCG_97apython3-x86_64-centos7-clang10-opt.cmake

...s/packages/LCG_97apython3-x86_64-centos7-clang8-dbg.cmake

...s/packages/LCG_97apython3-x86_64-centos7-clang8-opt.cmake

...nts/packages/LCG_97apython3-x86_64-centos7-gcc9-dbg.cmake

...nts/packages/LCG_97apython3-x86_64-centos7-gcc9-opt.cmake

utils/new_lcg_version.py