upgrade to generator-jhipster v8 #673

Job	Run time
build-matrix	12s
ngx-default	22m 6s
ngx-default-additional	10m 55s
ngx-mongodb-kafka-cucumber	14m 38s
ngx-gradle-fr	12m 48s
ngx-gradle-h2disk-ws-nocache	13m 56s
ngx-webflux-mongodb	13m 37s
ngx-webflux-gradle-mongodb-oauth2	13m 7s
ngx-webflux-psql-default	15m 44s
ngx-webflux-psql-additional	8m 23s
ngx-webflux-gradle-session-h2mem-es	9m 46s
ms-ngx-oauth2-mongodb-caffeine	16m 12s
mf-ngx-eureka-jwt-psql-ehcache	20m 44s
ms-mf-ngx-consul-oauth2-neo4j	19m 52s
check-angular	1s
	3h 12m 1s

Provide feedback