Remove dj20 from allow-failures and add more test environments
Remove dj20 from allow-failures and add more test environments

thenewguy/wagtail,kaedroho/wagtail,zerolab/wagtail,wagtail/wagtail,jnns/wagtail,kaedroho/wagtail,thenewguy/wagtail,nimasmi/wagtail,mixxorz/wagtail,takeflight/wagtail,nimasmi/wagtail,thenewguy/wagtail,wagtail/wagtail,mixxorz/wagtail,thenewguy/wagtail,jnns/wagtail,zerolab/wagtail,rsalmaso/wagtail,jnns/wagtail,mikedingjan/wagtail,mikedingjan/wagtail,FlipperPA/wagtail,wagtail/wagtail,gasman/wagtail,mixxorz/wagtail,takeflight/wagtail,thenewguy/wagtail,kaedroho/wagtail,rsalmaso/wagtail,torchbox/wagtail,zerolab/wagtail,timorieber/wagtail,zerolab/wagtail,takeflight/wagtail,nealtodd/wagtail,FlipperPA/wagtail,rsalmaso/wagtail,wagtail/wagtail,mixxorz/wagtail,nealtodd/wagtail,nimasmi/wagtail,gasman/wagtail,timorieber/wagtail,torchbox/wagtail,timorieber/wagtail,mikedingjan/wagtail,wagtail/wagtail,torchbox/wagtail,jnns/wagtail,nealtodd/wagtail,FlipperPA/wagtail,FlipperPA/wagtail,mixxorz/wagtail,nimasmi/wagtail,torchbox/wagtail,gasman/wagtail,rsalmaso/wagtail,kaedroho/wagtail,gasman/wagtail,kaedroho/wagtail,takeflight/wagtail,timorieber/wagtail,nealtodd/wagtail,gasman/wagtail,rsalmaso/wagtail,zerolab/wagtail,mikedingjan/wagtail