Fixes#9718
This PR adds POE graphs, even if not all the values that are polled on other OSes are available on this one.
DO NOT DELETE THIS TEXT
#### Please note
> Please read this information carefully. You can run `./scripts/pre-commit.php` to check your code before submitting.
- [X] Have you followed our [code guidelines?](http://docs.librenms.org/Developing/Code-Guidelines/)
#### Testers
If you would like to test this pull request then please run: `./scripts/github-apply <pr_id>`, i.e `./scripts/github-apply 10075`
After you are done testing, you can remove the changes with `./scripts/github-remove`. If there are schema changes, you can ask on discord how to revert.
We match "iosxe" OS as well for POE polling on cisco devices, as they are using the same MIBs.
This will add support for Catalyst 3850, as well as probably Cat4500 family as well.
DO NOT DELETE THIS TEXT
#### Please note
> Please read this information carefully. You can run `./scripts/pre-commit.php` to check your code before submitting.
- [X] Have you followed our [code guidelines?](http://docs.librenms.org/Developing/Code-Guidelines/)
#### Testers
If you would like to test this pull request then please run: `./scripts/github-apply <pr_id>`, i.e `./scripts/github-apply 5926`
* Poe Polling Code, Poe Graphs, and Huawei MIB
* Reverting the reindent done after pre-commit script
* Cleaning of code not used for Cisco IOS, removal of untested Procurve code, and restore of legacy generic code (tested with Cisco+huawei)
* Rename MIB file
* Rearranged duplicated code
* Cleaning of variable not used
* Cleaning of commented code after night validation in test environnement
* Cleaning after pre-commit.php comments
* test data with PoE oids for huawei 5720
* test data with PoE oids for cisco 2960X
* feature: Allow customisation of rrd step/heartbeat when creating new rrd files
* revert defaults
* added docs + webui config option
* Move RrdDefinition to an Object to make them easier to create and remove the possibility of typos.
* Fix style/lint issues and missing use statements
* 3 more missing use statements
* updated doc + moved schema file