T6431: op-mode command "monitor traceroute" missing recursive symlink (backport #3582)

[mergify]

Change Summary

There's 4 opmode commands with flexible leafNode parameters, sort of "varargs", using some symlink hackery to work. ping, traceroute and mtr were correctly symlinked in the Makefile, monitor traceroute was not.

The completion help texts were also switched between mtr and monitor traceroute, they're in the same XML def.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6431

Related PR(s)

Component(s) name

• monitor

Proposed changes

Added the missing symlink and swapped around the help text.

How to test

Before the patch:

vyos@TEST-VYOS-LEFT:~$ monitor traceroute 8.8.8.8 vrf 
Possible completions:
  <Enter>               Execute the current command

After the patch:

vyos@TEST-VYOS-LEFT:~$ monitor traceroute 8.8.8.8 vrf 
Possible completions:
  <Enter>               Execute the current command
  MGT                   Traceroute options

      
vyos@TEST-VYOS-LEFT:~$ monitor traceroute 8.8.8.8 vrf MGT 
Possible completions:
  <Enter>               Execute the current command
  address               Traceroute options
  aslookup
  bitpattern
  first-ttl
[...etc...]

Smoketest result

There doesn't appear to be a smoketest for tiny op-mode schema changes.

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

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This is an automatic backport of pull request #3582 done by [Mergify](https://mergify.com).