replace /system/routerboard with /system/resource

[systeembeheerder]

Pre-Request Checklist

• [ ? ] Passes rubocop code analysis (try rubocop --auto-correct)
• [ N ] Tests added or adapted (try rake test)
• [ N ] Changes are reflected in the documentation
• [ Y ] User-visible changes appended to CHANGELOG.md

Description

Command routerboard is not available in RouterOS CHR. Replaced with resources

oxidized output for CHR without this patch:

#   installed-version: 7.14.3
# 
# software id = 
#
/interface ethernet
...

oxidized output for CHR with this patch:

#                   version: 7.15.2 (stable)
#          factory-software: 7.1
#              total-memory: 1024.0MiB
#                       cpu: Intel(R)
#                 cpu-count: 1
#           total-hdd-space: 89.2MiB
#         architecture-name: x86_64
#                board-name: CHR Microsoft Corporation Virtual Machine
#                  platform: MikroTik
#   installed-version: 7.15.2
# 
# software id = 
#
/interface ethernet
...

oxidized output non-CHR without this patch:

#              model: RB4011iGS+
#      serial-number: F0250E50A77D
#      firmware-type: al2
#   current-firmware: 7.15.2
#   installed-version: 7.15.2
# 
# software id = 9GYN-EQP5
#
# model = RB4011iGS+
# serial number = F0250E50A77D
/interface bridge
...

oxidized output non-CHR with this patch:

#                   version: 7.15.2 (stable)
#          factory-software: 6.44.6
#              total-memory: 1024.0MiB
#                       cpu: ARM
#                 cpu-count: 4
#           total-hdd-space: 512.0MiB
#         architecture-name: arm
#                board-name: RB4011iGS+
#                  platform: MikroTik
#   installed-version: 7.15.2
# 
# software id = 9GYN-EQP5
#
# model = RB4011iGS+
# serial number = F0250E50A77D
/interface bridge
...

Closes #3180