Error listing security groups after default rules deletion

[Jacolex]

Issue occured in Queens.

Steps to reproduce the issue:

- create new security group
- delete default rules

When no rule is inserted, Horizon will displaying error when trying to list security groups. Error in apache:

Recoverable error: 'security_group_rules'

Empty security group must be edited or deleted via cli to fix listing in Horizon.

[Edward Hope-Morley (hopem)]

Tested this on Stein and did not see the same behaviour so assuming it is fixed and we just need to find patch to backport.

[Edward Hope-Morley (hopem)]

This was fixed in bug 1840465

[Edward Hope-Morley (hopem)]

Has been backported to Rocky so should not be hard to get this into Queens. I will mark this as a duplicate of 1840465 and we can use that bug to request the backport to Q.