Make profile dead, so that TODO will be for sure taken

XXX: fully drop legacy-enable-http3-string

lgeacy. not implemented, everything flat

Cleanups:

 * dropped needless definition of aibcc_enabled
 * renamed master_partition_monitor_monitor_httpd_port to
   MASTER_PARTITION_MONITOR_HTTPD_PORT
 * convert buildout comments to Jinja2 comments
 * strip whitespaces, so that generated file is readable
 * correctly indent on Jinja2 not on buildout
 * drop obvious comments
 * minimize amount of variables, by dropping used only once
 * pass all modules with _module suffix
 * avoid passing needless software_type
 * group definition of all globals into one place
 * name all globals with UPPERCASE

XXX: Clean up until it will be possible to modify it a lot

Change how defaults are handled in the cluster:

 * master instance handles all defaults for all nodes
   * it is the one place with all defaults
   * depending on parameter style default is global for the cluster or can be
     specified per node with -frontend-config-<i>-parameter
 * kedifa and frontend nodes need everything to be passed, in order to
   simplify the request
 * configuration. defaults are dropped, as their scope is too large - they are
   not only defaulting the value on the master, but on each requested node
   which leads to extreme complexity of parameter passing
 * use extra_slave_instance_list only, as instance-slave-list is reserved
   parameter provided by slapos.cookbook:slapconfiguration, sent by SlapOS
   Master as slave_instance_list, to the master partition; enforce
   transmissions of slave list in extra_slave_instance_list and consider
   it's always present
 * useless replication_number return value is dropped

This is required simplification, as the cluster needs full control over
defaults on each level.

This option will give fixed IP to each SIM card.

component/mavsdk: v↑ mavsdk (0.39.0 -> 1.4.13)
component/gwsocket: add gwsocket websocket server
software/js-drone: add frontend for subscriber
software/js-drone: use WebSocket for subscriber
slapos/software: run quickjs as a service

 * the default is already tested so drop TestRe6stVerificationUrlDefaultSlave
 * use locally provided URL to check re6st-verification-url, to not depend
   on external resources

slapos!1501 did a good job with making default disabled, but during the code
review tests changes were not well checked.

logrotate test for the rapid-cdn SR have been failing for quite some
time because of a squid.log file created (and henceforth rotated) on
any slave instance of the CDN:

```
Traceback (most recent call last):
    self.assertEqual(
AssertionError: Items in the second set but not the first:
'squid.log_10.0.160.212.20240306.23h57m09s-20240307.00h00m02s.old.xz'
```

Since we do not want to test this file in that specific test, this
commit instead loosely check the content of the rotated files
directory.
In other words, the test now checks for the presence of the two
files to be tested, but avoid failing if other files exist.

This goes in line with the two following lines of that same test,
loosely checking for file absence instead of an empty directory.

/cc @tomo @luke
/approved-by @luke
/reviewed-on !1541

This saves 380MB, by removing:
- bin/mysql_client_test (and the bin/mariadb-client-test symlink)
- mysql-test/

See merge request nexedi/slapos!1543

OPENSSL's libraries in this case SlapOS ones.

The SR didn't compile without libssl-dev package. Correctly use the
openssl lib from slapos.

Every restricted python code on python2 will be compiled as if it had
`from __future__ import print_function`, to ease transition away from
python2.

To update project code, 2to3 from python2.7 seems to do a good job.
Invoking like from the root of a repository rewrite all scripts:

    2to3  --write --nobackups --no-diffs --fix=print .

When the backend to redirect to uses scheme standard port it's cleaner to
redirect to URL without the port.

See https://www.rfc-editor.org/rfc/rfc9110.html#name-https-normalization-and-com:

"If the port is equal to the default port for a scheme, the normal form is to
omit the port subcomponent."

I forgot to update hashes after commits b6959875 and 7906b01c.
This commit solves the problem by updating slapos-master hashes.

I used the following commands:
autopep8 test_ors.py --select=E101 --ignore=E121 --indent-size=2 --in-place
autopep8 test.py --select=E101 --ignore=E121 --indent-size=2 --in-place

This parameter no longer exists, this was not removed correctly

"repozo --verify" is not working as this code expects it to: it simply
prints errors in stdout, and doesn't return an error code in case of
error. Thus, running it had absolutely no effect, except wasting IO
and CPU time.

This commit introduces the use of "repozo --recover --with-verify",
which runs the verify and the recover in a same step, and has the
advantage to raise (it doesn't exit with 0) in case of error. Also, as
it does the verification and the recovery at the same time, it uses
half the IO for the read. On a production server using SSDs, with a
ZODB of 1Tb, runner-import-restore now takes 14h instead of 26h, iow a
performance increase of 46%.

See merge request nexedi/slapos!1534