CI: print 10 slowest tests (#12014)
CI: print 10 slowest tests (#12014)

* CI: print 10 slowest tests

* CI: python3.7-dbg
grlee77/scipy,perimosocordiae/scipy,perimosocordiae/scipy,endolith/scipy,nmayorov/scipy,Eric89GXL/scipy,andyfaff/scipy,zerothi/scipy,rgommers/scipy,scipy/scipy,anntzer/scipy,grlee77/scipy,vigna/scipy,e-q/scipy,anntzer/scipy,zerothi/scipy,pizzathief/scipy,andyfaff/scipy,ilayn/scipy,andyfaff/scipy,ilayn/scipy,anntzer/scipy,perimosocordiae/scipy,scipy/scipy,nmayorov/scipy,tylerjereddy/scipy,WarrenWeckesser/scipy,scipy/scipy,zerothi/scipy,WarrenWeckesser/scipy,nmayorov/scipy,matthew-brett/scipy,Stefan-Endres/scipy,Stefan-Endres/scipy,rgommers/scipy,rgommers/scipy,matthew-brett/scipy,mdhaber/scipy,WarrenWeckesser/scipy,zerothi/scipy,endolith/scipy,anntzer/scipy,endolith/scipy,e-q/scipy,vigna/scipy,scipy/scipy,tylerjereddy/scipy,Stefan-Endres/scipy,nmayorov/scipy,anntzer/scipy,mdhaber/scipy,endolith/scipy,rgommers/scipy,grlee77/scipy,e-q/scipy,anntzer/scipy,pizzathief/scipy,pizzathief/scipy,Stefan-Endres/scipy,ilayn/scipy,Stefan-Endres/scipy,Eric89GXL/scipy,vigna/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,Stefan-Endres/scipy,tylerjereddy/scipy,Eric89GXL/scipy,Eric89GXL/scipy,scipy/scipy,Eric89GXL/scipy,tylerjereddy/scipy,ilayn/scipy,andyfaff/scipy,andyfaff/scipy,vigna/scipy,WarrenWeckesser/scipy,vigna/scipy,Eric89GXL/scipy,ilayn/scipy,pizzathief/scipy,perimosocordiae/scipy,WarrenWeckesser/scipy,andyfaff/scipy,tylerjereddy/scipy,ilayn/scipy,mdhaber/scipy,zerothi/scipy,mdhaber/scipy,grlee77/scipy,zerothi/scipy,pizzathief/scipy,nmayorov/scipy,perimosocordiae/scipy,endolith/scipy,rgommers/scipy,matthew-brett/scipy,matthew-brett/scipy,e-q/scipy,mdhaber/scipy,endolith/scipy,scipy/scipy,mdhaber/scipy,grlee77/scipy,matthew-brett/scipy,e-q/scipy