fix(flapping) don't flap if host/parents not up

[UrBnW]

Hi,

Description

As described in #192, flapping should not be computed when related host (for a service) or parents (for a host) are not up.
It makes more sense, and flapping is only reliable to compute when the related host / parents are up.
This also leads to less unneeded / unwanted notifications.
Fixes #192.

Type of change

• Patch fixing an issue (non-breaking change)
• New functionality (non-breaking change)
• Breaking change (patch or feature) that might cause side effects breaking part of the Software
• Updating documentation (missing information, typo...)

Target serie

• 19.10.x
• 20.04.x
• 20.10.x
• 21.04.x
• 21.10.x (master)

How this pull request can be tested ?

Enable flapping detection, make a host or service to flap while its related host or parent is down, and be sure it is not flagged as flapping.

Many thanks 👍

[UrBnW]

@bouda1 what's the build issue here ?
So that I can correct it.
Many thanks !
(I don't have access to Jenkins results)

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SonarQube Quality Gate:

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[omercier]

Hi @UrBnW,
Would you like to discuss this PR as well as This one with the dev team and myself?
You can reach me at <my pseudo>@centreon.com
Best regards,
Olivier

[UrBnW]

Hi @omercier,
Sure, thank you for your proposal, let me reach you by mail 👍

[omercier]

Hi,
Thanks a lot for your contribution!
This PR will be processed by our dev team for our 21.10 release.
Regards,
Olivier

[UrBnW]

Really good news @omercier, then you again for your consideration 👍

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SonarQube Quality Gate:

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No Duplication information

[rem31]

this pr is fixed by it #557

[UrBnW]

Absolutely perfect, really glad, thank you @rem31 👍