ycrc should prompt for password

[tylarb]

Currently accepts password, but as command line flag.

[tylarb]

In addition to password accept, a --password-on-stdin would be great

[tylarb]

In fact... --password should become --password-on-stdin and otherwise, if password required, prompt

[tylarb]

Specification...

Assume DB is password protected and this command is executed:

 ./ycrc test -s 1 --tables=mytable2,mytable3  

The query should be attempted, and if there's a connection failure to DB, specifically an AUTH failures, not a pport or network, or general failures, then the ycrc should prompt for a password on the cmdline using hidden type text

this commit should also remove --password and replace with --password-on-stdin which will do the same thing as password but be hidden