[http] Add unix socket option

[LaurenceJJones]

Implement #2757

Add unix socket option to http plugin, we have to use this in conjunction with URL parameter as we dont know which path the user wants so if they would like to communicate over unix socket they need to use both, however, the hostname can be whatever they want. (All communication will be over the unix socket but we dont know the path or scheme and rather not add specific arguments just for that when they can define within URL param)

Example of pushing to Gotify over unix socket (Dont worry about token as it is just a local version)

type: http
name: http_default
log_level: info

format: |
  {{ range . -}}
  {{ $alert := . -}}
  {
    "extras": {
      "client::display": {
      "contentType": "text/markdown"
    }
  },
  "priority": 3,
  "title": "test from crowdsec!",
  "message": "message!"
  }
  {{ end -}}

url: "http://_/message?token=AxHH7ZX1ttm-ZWc"
unix_socket: /opt/gotify.sock

# Any of the http verbs: "POST", "GET", "PUT"...
method: POST

headers:
  Content-Type: application/json
#   Authorization: token 0x64312313

$ sudo cscli notifications test http_default
WARN[2024-01-20T14:32:49Z] You are using sqlite without WAL, this can have a performance impact. If you do not store the database in a network share, set db_config.use_wal to true. Set explicitly to false to disable this warning.
INFO[2024-01-20T14:32:49Z] loaded capi whitelist from /etc/crowdsec/capi_whitelists.yaml: 1 IPs, 0 CIDRs
DEBU[0000] starting plugin                               args="[/usr/local/lib/crowdsec/plugins/notification-http]" path=/usr/local/lib/crowdsec/plugins/notification-http
DEBU[0000] plugin started                                path=/usr/local/lib/crowdsec/plugins/notification-http pid=61824
DEBU[0000] waiting for RPC address                       path=/usr/local/lib/crowdsec/plugins/notification-http
DEBU[0000] using plugin                                  version=1
TRAC[0000] waiting for stdio data
INFO[0000] Using socket '/opt/gotify.sock'               @module=http-plugin
INFO[2024-01-20T14:32:49Z] registered plugin http_default
INFO[2024-01-20T14:32:49Z] pluginTomb dying
INFO[0000] received signal for http_default config       @module=http-plugin
INFO[2024-01-20T14:32:49Z] killing all plugins
DEBU[0000] received EOF, stopping recv loop              err="rpc error: code = Unavailable desc = error reading from server: EOF"
INFO[0000] plugin process exited                         path=/usr/local/lib/crowdsec/plugins/notification-http pid=61824
DEBU[0000] plugin exited

[github-actions]

@LaurenceJJones: There are no 'kind' label on this PR. You need a 'kind' label to generate the release automatically.

• /kind feature
• /kind enhancement
• /kind fix
• /kind chore
• /kind dependencies

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[github-actions]

@LaurenceJJones: There are no area labels on this PR. You can add as many areas as you see fit.

• /area agent
• /area local-api
• /area cscli
• /area appsec
• /area security
• /area configuration

Details

I am a bot created to help the crowdsecurity developers manage community feedback and contributions. You can check out my manifest file to understand my behavior and what I can do. If you want to use this for your project, you can check out the BirthdayResearch/oss-governance-bot repository.

[codecov]

Codecov Report

Attention: 21 lines in your changes are missing coverage. Please review.

Comparison is base (3e3df5e) 57.93% compared to head (d4e5f6e) 57.93%.

Files	Patch %	Lines
cmd/notification-http/main.go	0.00%	21 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2764   +/-   ##
=======================================
  Coverage   57.93%   57.93%           
=======================================
  Files         239      239           
  Lines       30983    30988    +5     
=======================================
+ Hits        17950    17953    +3     
- Misses      11399    11403    +4     
+ Partials     1634     1632    -2     

Flag	Coverage Δ
bats	37.86% <0.00%> (+0.01%)	⬆️
unit-linux	52.29% <ø> (+0.01%)	⬆️
unit-windows	47.76% <ø> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[LaurenceJJones]

/kind enhancement
/area agent

[LaurenceJJones]

Did you manage to test and review @mmetc