monitoring: T4747: Fix template check influxdb config

[sever-sever]

Change Summary

Due to monitoring telegraf was rewritten - fix the template for inputs.exec influxdb plugin
We do not use influxdb_configured in the dictionary anymore and use just influxdb

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://phabricator.vyos.net/T4747

Component(s) name

monitoring

Proposed changes

How to test

VyOS configuration:

set service monitoring telegraf influxdb authentication organization 'log@in.local'
set service monitoring telegraf influxdb authentication token 'GuRJc12tIzfjnYdKRAIYbxdWd2aTpOT9PVYNddzDnFV4HkAcD7u7-kndTFXjGuXzJN6TTxmrvPODB4mnFcseDV=='
set service monitoring telegraf influxdb port '8086'
set service monitoring telegraf influxdb url 'https://foo.local'

Expected inputs.exec in the configuration:

vyos@r14# cat /run/telegraf/telegraf.conf | grep 'inputs.exec' -A 8
[[inputs.exec]]
  commands = [
    "/etc/telegraf/custom_scripts/show_firewall_input_filter.py",
    "/etc/telegraf/custom_scripts/show_interfaces_input_filter.py",
    "/etc/telegraf/custom_scripts/vyos_services_input_filter.py"
  ]
  timeout = "10s"
  data_format = "influx"
[edit]
vyos@r14# 

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