Upgrade to ntopng 4

[gsanchietti]

• Adapt configuration for the new release
• Remove alerts property
• Code cleanup

NethServer/dev#6199

Upstream packages available in nethserver-testing:

• n2n-2.6.0-250.x86_64.rpm
• ndpi-3.2.0-2477.x86_64.rpm
• ntopng-4.0.200525-9255.x86_64.rpm
• ntopng-data-4.0.200525-9255.noarch.rpm
• pfring-7.6.0-3000.x86_64.rpm

[nethbot]

in 7.8.2003/autobuild:

• nethserver-ntopng-2.2.2-1.11.pr19.gb6da7cf.ns7.noarch.rpm x86_64 armhfp aarch64

[nethbot]

in 7.8.2003/autobuild:

• nethserver-ntopng-2.2.2-1.12.pr19.g3df0c6c.ns7.noarch.rpm x86_64 armhfp aarch64

[gsanchietti]

Added lua script for Cockpit dashboard.

Output example:

[
  {
    "key": "192__168__2__203",
    "flows": 40,
    "since": 15341,
    "throughput": 17982.580078125,
    "name": "test.nethserver.local",
    "ip": "192.168.2.203",
    "direction": "download",
    "traffic": 1257900282
  },
  {
    "key": "192__168__2__250",
    "flows": 1,
    "since": 2051897,
    "throughput": 7311.3701171875,
    "name": "t2.test.local",
    "ip": "192.168.2.250",
    "direction": "upload",
    "traffic": 446684482
  },
  ...
]

APIs:

• Top local hosts: curl 'http://localhost:3000/lua/nethserver.lua?mode=local&currentPage=1&sortColumn=column_thpt&sortOrder=desc&long_names=1' | jq
• Top remote hosts: curl 'http://localhost:3000/lua/nethserver.lua?mode=remote&currentPage=1&sortColumn=column_thpt&sortOrder=desc&long_names=1' | jq
• Traffic for all interfaces: curl 'http://localhost:3000/lua/rest/get/interface/data.lua?ifid=1000' | jq
• Traffic by protocol: curl 'http://localhost:3000/lua/if_stats_ndpi.lua?format=json' | jq

[nethbot]

in 7.8.2003/autobuild:

• nethserver-ntopng-2.2.2-1.13.pr19.g946a742.ns7.noarch.rpm x86_64 armhfp aarch64

[nethbot]

in 7.8.2003/autobuild:

• nethserver-ntopng-2.2.2-1.14.pr19.g3011f76.ns7.noarch.rpm x86_64 armhfp aarch64