provisioning: Custom options by terminal

[cruzccl]

Evaluate the possibility of adding an additional field in Terminal section thats lets you add some random text.

This text may be fetched from provisioning templates with $this->terminal->getExtraOpts().

This way you could have some special settings loaded for that particular terminal.

[manfer]

It would be nice if this field can contain a list of key/value pairs -one per line- and an easy way to retrieve those values, $this->terminal->getExtraOpts()->dialplan, $this->terminal->getExtraOpts()->language, etc. If the key doesn't exists retrieve a blank string.