Inclusion test for the set of rule-breaking attributes

[titorau]

Environment

• Nautobot version: 2.3.0
• nautobot-data-validation-engine version: 3.1.1

Proposed Functionality

Allow to update an object if it does not break more validation rules.

More formally: A: set of rule-breaking attributes before the update B: set of rule-breaking attributes after the update

if B is a subset of A:
    allow the update
else:
   reject the update

With this feature, we can continue updating problematic objects without having to disable validation rules.

Use Case

1. I have a device called Foo with no serial number.
2. I set a regex rule for device names. It must begin with a D.
3. I set a required rule for device serial.
4. Foo breaks both rules.
5. I find the missing serial number.
6. I want to add the serial number in Nautobot.

Problem: I must fix all the issues caused by Foo. I also have to rename it, right now.

[titorau]

An easier way to relax the constraint might be to focus on the compliant boolean variable. We can reject an update if and only if it makes a compliant object non-compliant.

Before	After	Update	Remark
0	0	Yes	still non-compliant
0	1	Yes	makes the object compliant
1	0	No	makes the object non-compliant
1	1	Yes	still compliant