Add new configuration parameters to Wi-SUN network interface and Border Router class (Mbed OS 5.15)

[mikaleppanen]

Summary of changes

This is port of https://github.com/ARMmbed/mbed-os/pull/12657 to Mbed OS 5.15

Added get/validate/set functions for following Wi-SUN mesh interface configuration options:

- Network name
- Regulatory domain
- Network size
- FHSS channel mask
- FHSS unicast channel function related parameters
- FHSS broadcast channel function related parameters
- Timing parameters

Moved Wi-SUN .json configuration parsing from wisun tasklet to Wi-SUN mesh interface class.

Added Wi-SUN Border Router class. Class can be used to start and stop Wi-SUN Border Router.

Border Router class supports following configuration options:

- RPL DIO trickle parameters
- PAN configuration

Added support of network interface name method to Nanostack Mesh, EMAC and PPP interfaces.

Impact of changes

None

Migration actions required

None

Documentation

None

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Pull request type

[] Patch update (Bug fix / Target update / Docs update / Test update / Refactor)
[X] Feature update (New feature / Functionality change / New API)
[] Major update (Breaking change E.g. Return code change / API behaviour change)

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Test results

[] No Tests required for this change (E.g docs only update)
[X] Covered by existing mbed-os tests (Greentea or Unittest)
[] Tests / results supplied as part of this PR

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Reviewers

@mikter @artokin @juhhei01 @JarkkoPaso

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[ciarmcom]

@mikaleppanen, thank you for your changes.
@JarkkoPaso @artokin @juhhei01 @mikter @ARMmbed/mbed-os-maintainers please review.

[mikaleppanen]

@0xc0170 can this pull request progress?

[0xc0170]

CI started

[0xc0170]

CI restarted

[mbed-ci]

Test run: SUCCESS

Summary: 11 of 11 test jobs passed
Build number : 2
Build artifacts

[andypowers]

Approved.