nginx: don't install all module for FULL variant

nginx: don't install all module for FULL variant

We currently have a more or less circular dependency with nginx ssl and
full variant.

FULL variant depends on every nginx module. Every nginx module depends
on nginx-ssl.

Since nginx-full depends on an nginx module, nginx-ssl is installed as
module depends on it and then the installation fails as nginx-full
conflicts with nginx-ssl.

nginx-full in it's meaning is nginx built with every config selected and
it should not have module as dependency. In fact an user should always
install them separetly as while other things, local modification to the
nginx config file are required to include the just installed module.

To fix this circular dependency problem, drop the dependency of every
nginx module for FULL variant.

Fixes: #21300
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>