Add a versionadd to postgres_extension.
Update the master and minion guides to discuss timeout settings.
Update best_practices to resolve issue where slspath is used, but not yet implemented/explained.
Fix a typo
Fix a typo in the master conf.
Merge pull request #14950 from gravyboat/develop

Add versionadd to postgres_extension, update troubleshooting guides to explain timeouts, pull slspath from best_practices