Calvin Leung Huang bef6eae689
raft: use file paths for TLS info in the retry_join block (#8894)
* raft: use file paths for TLS info in the retry_join stanza

* raft: maintain backward compat for existing tls params

* docs: update raft docs with new file-based TLS params

* Update godoc comment, fix docs
2020-05-06 18:26:08 -07:00
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