[BUG] Network Offering form security options are not saved correctly

[alexandremattioli]

Describe the bug
When creating a network offering with "promiscuous mode", "forged transmits" and "MAC address changes" on Primate it sets the values on the "network_offering_details" table as "accept" when the correct value that should be set is "true".

To Reproduce
Steps to reproduce the behavior:

1. Log in as an Admin
2. Go to 'network offerings'
3. Create a network offering with the 3 security settings enabled
4. On the "network_offering_details" they will have the value "accept".

Expected behavior
Value for security settings should be "true"

Screenshots

[yadvr]

@shwstppr can you check this? In the handler should the option accept be saved as true?