Changes to database constraints
Changes to database constraints

Remove NOT NULL constraints for alarm_priority and monitor since we
should be able to leave them in an unset state. Also remove the defaults
for ip_net_plan type, pool default_type and monitor / alarm_priority.
All that can be handled in python middleware instead. Let's not enforce
default values in the database, just constraints.

plajjan/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,plajjan/NIPAP,ettrig/NIPAP,plajjan/NIPAP,bbaja42/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,SoundGoof/NIPAP,fredsod/NIPAP,SpriteLink/NIPAP,fredsod/NIPAP,SpriteLink/NIPAP,ettrig/NIPAP,SoundGoof/NIPAP,ettrig/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,bbaja42/NIPAP,bbaja42/NIPAP,SoundGoof/NIPAP,bbaja42/NIPAP,ettrig/NIPAP,bbaja42/NIPAP,fredsod/NIPAP,garberg/NIPAP,ettrig/NIPAP,garberg/NIPAP,SoundGoof/NIPAP,plajjan/NIPAP,SpriteLink/NIPAP,garberg/NIPAP,SpriteLink/NIPAP,SoundGoof/NIPAP,garberg/NIPAP,garberg/NIPAP,fredsod/NIPAP,ettrig/NIPAP,fredsod/NIPAP,plajjan/NIPAP,SpriteLink/NIPAP