Use warning instead of error for read_private_key_file function#286

hardyoyo wants to merge 2 commits intopahaz:masterpahaz/sshtunnel:masterfrom

hardyoyo:use-warning-instead-of-error-for-read_private_key_filehardyoyo/sshtunnel:use-warning-instead-of-error-for-read_private_key_fileCopy head branch name to clipboard