Overlapping VLAN pool check result does not match true expected result

[monrog2]

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Describe the bug
When there are three (or more) domains associated to an EPG, the overlapping VLAN pool check may flag it as FAIL - OUTAGE WARNING!! or MANUAL CHECK REQUIRED incorrectly.

Script output
Example:

• EPG 1 (VLAN 10)
  +--- Domain 1 --> VLAN Pool A (VLAN 10-20)
  +--- Domain 2 --> VLAN Pool A (VLAN 10-20)
  +--- Domain 3 --> VLAN Pool B (VLAN 15-20)

As shown in the example above, three domains (Domain 1, 2 and 3) are associated to EPG 1 which is using VLAN 10. Domain 1 and 2 are using the same VLAN Pool A while Domain 3 is using VLAN Pool B.

In this case, there are overlapping VLAN IDs (15-20) between these domains, in other words between VLAN Pool A and B. However, the VLAN used for this EPG is 10 which is only in VLAN Pool A, which is used by Domain 1 and 2.

To Reproduce
Described above

Expected behavior
checking the identity of VLAN Pools behind the domains.

Additional context
N/A