enable retrying in mput/put in repocli by default

[achetverikov]

It'd be nice if by default put/mput would try to retry the upload on error. I know that there is a parameter for that, but I only learned about it after seeing the errors due to connection failure in the log for a massive transfer job.

[hurngchunlee]

@achetverikov this was also suggested by @benglitz.

I have just make the default maxretry to 2 (in total 3 attempts). See ea2a776