* Default to null for group yaml discovery.
* Update test data for a154bda yaml group null fix.
* Changes to guessed limit functions for sensors.
Original behaviour
===================
The file `includes/discovery/functions.inc.php` contains
`sensor_limit_low()` and `sensor_limit()` which both attempt to
guess a sane value for sensors when no explicitly defined
low_limit or high_limit can be found during discovery.
Both switch control structures used in those two functions
have empty case statements which means that if one of those matches,
it's going to fall through and run the code for each subsequent
case until a `break` is reached.
For example, when we call `function sensor_low_limit(dbm, -13.036)`
it will return the value `-12.3842` instead of `null`. That is
because there will be a match at `case 'dbm':` which falls through
all the way to `case 'cooling':`, where it performs
`$limit = -13.036 * 0.95` before hitting a `break`.
Changed behaviour
===================
Removed `power_consumed` and `count` guessed low_limit and
high_limit, I personally added those sensor classes in PR #9471
when I didn't understand that a switch control structure has
fall-through behaviour so I can guarantee that guessing limits for
those is a mistake on my behalf. It should not be there, only
power_factor can have guessed limits. Apologies for the issue,
I'm still a beginning programmer!
Furthermore, I removed guessed high_limit values for `current`
and `power` because these are supposed to draw higher values as
more devices or components are installed on for example a PDU or
a chassis.
Finally, I removed guessed low_limit and high_limit for `dbm`
sensors, there is a much too large variance in power budget on
commercially available optical transceivers for there to be a
sensible window where you can guess these values.
* Documentation on adding sensor classes.
* Update test data - sensor limit changes @ 30212d2
Improves visual identification for sensors
- [x] Docs
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* Fix Zynos temp warn limit
And others, but this seems to be the only one that uses
remove some odd limit restriction in the poller
* More consistent rounding for sensor limits
* round all numeric limits to 10 digits
* update test data
* Remove complex calculation as negative limit values are already swapped as needed.
* Adding ifType to base_oids
* Improve discovery (update ifType) and polling (save ifType)
* Updated test data
* Updated json test data
* vlan isn't filtered by default :P
* With default ignored ports
* Update newer test data
* Added support for SAF CFM L4 wireless device
* Added copyright statement according to LibreNMS documentation
* Added snmp test data and excluded some discover modules from os definition
* Style issue fixed
* More descriptive function
* MIB file rename
* Rename MIB file and change other files accordingly
* Added test data
* Removed debug statement
* Last checks
* Style changes
* Style changes
* Style changes
* Style changes
* Code restructure to make it more readable
* Fixed error in foreach
* Style issues
* Formatting of states within Yaml changed to make it more readable
* Omit default arguments
* Better code and modules only in CFM-M4P-MUX
* Chaged cfml4 to cfm
* Update Sensor.php
* Update Sensor.php
* Better handling of scientific numbers
* Better handling of scientific numbers
* New test data
* Correction on handling trailing zeros
* Different way of cleaning the numbers based on Tony's input
