BIGTOP-4380: Display key filename after uploaded when adding host #794

Job	Run time
Check typos	6s
Check code style	16s
Build project (17)	1m 49s
Check license	33s
Build project (21)	2m 14s
Run unit test(Java)	1m 18s
Run unit tests(Vue/Typescript)	1m 4s
	7m 20s

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