doc: Adding new CLI and updating existing show output

[SumitAgarwal123]

1. Adding 2 two new fields

Peer type, configured/dynamic
Detect multiplier

2. Added new command "clear bfd counters"

3. Added new command "show bfd peers brief"

Signed-off-by: Sayed Mohd Saquib sayed.saquib@broadcom.com

[SumitAgarwal123]

Related code pull request
#5013

[LabN-CI]

💚 Basic BGPD CI results: SUCCESS, 0 tests failed

Results table

_	_
Result	SUCCESS git merge/5288 5471910
Date	11/06/2019
Start	02:05:19
Finish	02:26:54
Run-Time	21:35
Total	1815
Pass	1815
Fail	0
Valgrind-Errors	0
Valgrind-Loss	0
Details	vncregress-2019-11-06-02:05:19.txt
Log	autoscript-2019-11-06-02:06:11.log.bz2
Memory	425 433 360

For details, please contact louberger

[NetDEF-CI]

Continuous Integration Result: SUCCESSFUL

Congratulations, this patch passed basic tests

Tested-by: NetDEF / OpenSourceRouting.org CI System

CI System Testrun URL: https://ci1.netdef.org/browse/FRR-FRRPULLREQ-9610/

This is a comment from an automated CI system.
For questions and feedback in regards to this CI system, please feel free to email
Martin Winter - mwinter (at) opensourcerouting.org.

---

CLANG Static Analyzer Summary

• Github Pull Request 5288, comparing to Git base SHA b3bce3a

Fixed warnings:

• Dead store: Dead initialization in bfd_packet.c, function bfd_recv_cb, line 526

New warnings:

• Logic error: Dereference of null pointer in nhrpd.h, function notifier_call, line 79
  • See https://ci1.netdef.org/browse/FRR-FRRPULLREQ-9610/artifact/shared/static_analysis/report-8b44fa.html#EndPath

Static Analysis warning summary compared to base:

• Fixed warnings: 1
• New warnings: 1

1 Static Analyzer issues remaining.

See details at
https://ci1.netdef.org/browse/FRR-FRRPULLREQ-9610/artifact/shared/static_analysis/index.html

[ton31337]

OK, but waiting for #5013

[SumitAgarwal123]

#5013 is closed with #5352

I think we are good to merge this PR now