[BUG]Java] Fix a race condition in RetryingOAuth.mustache

[Dretch]

If there were multiple concurrent requests at a time at which the OAuth token had expired, only a single request would be retried. The other requests would fail because of the expired token, but not be retried and so the failures would be propagated to the caller.

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[Dretch]

Previously: only ever returned true if this thread got a new token.

Now: returns true if any thread got a new token.

[Dretch]

This test fails with the previous version of RetryingOAuth.mustache

[wing328]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

[Dretch]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

Thanks for pointing that out @wing328 -- I have now (I think) corrected the author on the commit so it matches my Github account.

[wing328]

cc @bbdouglas (2017/07) @sreeshas (2017/08) @jfiala (2017/08) @lukoyanov (2017/09) @cbornet (2017/09) @jeff9finger (2018/01) @karismann (2019/03) @Zomzog (2019/04) @lwlee2608 (2019/10) @nmuesch (2021/01)

[wing328]

@Dretch thanks for the fix, which looks good to me.