add command to create psql-client on k8s #999

Job	Run time
Build Matomo NGINX / build	14s
Build Matomo PHP / build	23s
Build Databox Indexer / build	23s
Build Keycloak / build	14s
Build nginx-cache-purge / build	14s
Build nodejs-base / build	21s
Build nginx-fpm-base / build	22s
Build php-fpm-base / build	14s
Build Report API / build	14s
Build Configurator / build	27s
Build Expose API / build	59s
Build Notify API / build	1m 6s
Build Uploader API / build	48s
Build Databox API / build	1m 18s
Build Dashboard / build	27s
Build Databox Client / build	23s
Build Expose Client / build	24s
Build Uploader Client / build	17s
Setup stack	7m 28s
	16m 16s

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