client: retrieve bootstrap v4 themes for vue #32922

Job	Run time
build-matrix	9s
vue-default (n20.17.0/j21)	1m 45s
vue-default-additional (n20/j21)	1m 24s
vue-noi18n-mysql-ws-oauth2 (n20/j21)	3m 17s
vue-fulli18n-mysql-es (n20/j22)	1m 45s
vue-gradle-h2mem-ws-session (n20.17.0/j17)	1m 31s
vue-h2disk-ws-theme (n20/j17)	1m 40s
vue-session-cassandra-fr (n20.17.0/j17)	1m 14s
ms-mf-vue-consul-oauth2-mysql-memcached (n20/j21)	2m 5s
stack-vue-no-db (n18/j22)	1m 52s
check-vue	1s
	16m 43s

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