[7.15] Fix plugin manager test that fail to fetch dependency (#13270)#13272

Merged

kaisecheng merged 1 commit intoelastic:7.15from kaisecheng:backport/7.15/pr-13270

Oct 5, 2021

+1-1

Commits on Oct 5, 2021

Fix plugin manager test that fail to fetch dependency (elastic#13270 )
kaisecheng
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