JH qa expand pattern for feature flag

What does this MR do and why?

What: This MR includes path of yamls of feature flags from jh directory which are excluded before.
Why: when we run E2E tests with --set-feature-flags argument, the yamls of feature flags which are in jh/config can not been loaded. If we use the JH only feature flags, the E2E tests can not start.

Screenshots or screen recordings

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The set_default_locale_to_zhcn is jh only feature， This feature flags can not be found in /api/v4/features, then bin/qa try to find in gitlab/ee/config/feature_flags, but this features flag yaml is actually in gitlab/jh/config/feature_flags, this process is crashed.

How to set up and validate locally

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MR acceptance checklist

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/cc @daveliu