error in build-in help of configure script

In ./configure -h script, some optional packages have PATH described as optional, and some don't despite being optional.

For example:

--with-mysql=PATH path to the MySQL 'mysql_config' script (MySQL is used for the DHCP database)

has an optional path, but it is not described as such. And other packages are described as optional like:

--with-libyang[=PATH] optional path to the libyang installation directory

I would advise checking all as if they are optional.

Kea version 2.1.1

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information