nginx port is a parameter

Adapt all promise sections to changes in plugin promise recipe.

In b049c057 (upgrade to slapos.toolbox version 0.123, 2021-07-19), we
translated check-secure = 1 to config-http-code = 401, but check-secure = 1
also accepted responses with status code 200.

Thoses promises where checking servers without authentication enabled, they
reply with 200, so update the promises accordingly to expect 200.

This introduces some breaking changes to the check_url_available
promise:

- http_code has been renamed to http-code
- check-secure = 1 has been deprecated; http-code = 401 should be used
  instead

This avoids having multiple monitors trying to listen on the same port
when using replicate instances.

Change all `check_port_listening` promises to `check_socket_listening`
and rename all associated `config-hostname` arguments to `config-host`

add frontendhtml5as: add frontend

Not sure which commit broke it, but this diff is now polluting my commits.

It allows to access monitoring with a monitoring web app.

If the service crash it will inform master by trigger a "bang" call

Learn more by reading: README.update-hash.rst

done with:

     npm install
     git ls-files | grep -v '\/unstable\/' | xargs ./node_modules/.bin/eclint fix
     git ls-files | grep buildout.hash.cfg | xargs ./update-hash

This is required, otherwise published URL in slapos master is `"None"`

This should fix this random failure with tests:

    ======================================================================
    FAIL: test_influxdb_api (test.TestInfluxDb)
    ----------------------------------------------------------------------
    Traceback (most recent call last):
      File "parts/slapos-repository/software/grafana/test/test.py", line 126, in test_influxdb_api
        [connection_params['influxdb-database']], result['series'][0]['values'])
    AssertionError: ['telegraf'] not found in [[u'_internal']]

Monitoring promise break instanciation:
  UserError: No section named 'monitor-base-promise'

and telegraf startup script is using influxdb promise, because it has a
bug that it needs to start only after influxdb is available, so it does
not look so easy to switch to monitoring stack.

Also, this software is experimental (and also is conceptually a
monitoring software on its own), so it does not need monitoring for now.

This reverts commit 48b6c27c.

This enable vieiwing applications logs directly in grafana, as long as
loki agent can access the log file and the regular expressions to parse
the logs are defined

Other changes:
 - provision data sources automatically so that user do not have to add
   them manually
 - update TODO in README
 - introduce a SR test
 - switch to dep to install dependencies, because that's how these
  packages manage their dependencies.

Versions up:
  grafana: v6.3.0
  telegraf: v1.11.1-0
  influxdb: v1.7.8rc1
New:
  loki: v0.3.0

Filename is split as an URL path, and joined in OS-dependent manner.
Remove corresponding comment in all buildout.hash.cfg files.

See
https://docs.influxdata.com/influxdb/v1.4/administration/config/#bind-address-127-0-0-1-8088

This should not be reachable from outside because it can be used to pull
a backup.
Because we usually have reachable ipv6 and local only ipv4, make it
ipv4 and add a note in README because this is not always true.

Also make ports use explicit names in profile and fix promise that
should check http-port and not rpc-port