Allow ww_install.pl to be run with command line option --no-interactive

[aubreyja]

This will also require command line options for specifying the mysql root password and webwork database password. On ubuntu I think we can pass mysql root password to debconf so we won't be asked for it during the mysql installation. The following lines set the mysql root password using debconf prior to installing mysql:

debconf-set-selections <<< 'mysql-server-<version> mysql-server/root_password password $ROOTPW'
debconf-set-selections <<< 'mysql-server-<version> mysql-server/root_password_again password $ROOTPW'
apt-get -y install mysql-server

On RH, fedora, we'll need to pass that info to mysql_secure_installation or write a script like that which will accept the root password on the command line and do the other actions in that script automatically.

[aubreyja]

For good use of GetOpt::Long see using "Getopt::Long" how to check parameter mandatory and esp. this reply