See merge request nexedi/slapos!977

- pins component/fluentd gems version to fix :

  ERROR:  Error installing fluentd:
	msgpack requires Ruby version >= 2.4.

  encountered while supplying software/fluentd in a SlapOS Webrunner.

- removes outdated gem arguments '--no-ri --no-rdoc'
  by default `rubygemsrecipe` uses '--no-document' (see https://lab.nexedi.com/nexedi/rubygemsrecipe/blob/master/rubygems.py#L206)

- splits `gem-options` arguments to fit the README example (see https://lab.nexedi.com/nexedi/rubygemsrecipe/blob/master/README.rst#L50)

- adds minimal test to check fluentd SR instanciation

https://mesonbuild.com/

The keyboard option is actually not recommended in the QEMU
documentation
(https://manpages.debian.org/buster/qemu-system-x86/qemu-system-x86_64.1.en.html).
After some tests, it appears that noVNC is already sending raw keyCode
to QEMU since 2016 (see
https://github.com/novnc/noVNC/commit/f4f4e8993d6daeb43b957766cd6973993232ba13).

More information can be found in
https://github.com/novnc/noVNC/issues/21 and
https://www.berrange.com/posts/2010/07/04/more-than-you-or-i-ever-wanted-to-know-about-virtual-keyboard-handling/

rotate_size 0 or rotate_size -1 does not help to disable rotation, so
workaround it by setting very big rotation limit.

See merge request nexedi/slapos!968

It was formatted with a '\t', which json-schemas test does not allow.

We are not using this

This host header is not passed by default, because we are already using
proxy_set_header, so we need to set it explicitly.

It seems that since we updated some packages in in 279486fe (stack/slapos:
version up some eggs with known vulnerabilties, 2021-01-28) slaprunner was
producing URLs with "localhost" as hostname when using redirect(url_for(...))

As discussed in https://github.com/nextcloud/news/issues/1306 a new release was
uploaded.

See merge request nexedi/slapos!939

Commit 2f4d8cf8 fixed the following error:

  Generating phar.php
  .../parts/apache-php__compile__/php-7.3.6/sapi/cli/php: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory
  Makefile:420: recipe for target 'ext/phar/phar.php' failed

and only -rpath is needed.

apache-php does not actually depend on zstd (hence the removal of the 'extends'
line) but there's something not smart:

  $ ldd .../parts/apache-php__compile__/php-7.3.6/sapi/cli/php
        linux-vdso.so.1 (0x00007ffe29f86000)
        libcrypt.so.1 => /lib/x86_64-linux-gnu/libcrypt.so.1 (0x00007f625e64a000)
        libcrypto.so.1.1 => .../shared/openssl/.../lib/libcrypto.so.1.1 (0x00007f625e35e000)
        libssl.so.1.1 => .../shared/openssl/.../lib/libssl.so.1.1 (0x00007f625ea05000)
        libzip.so.5 => .../shared/libzip/.../lib/libzip.so.5 (0x00007f625e9ea000)
        libz.so.1 => .../shared/zlib/.../lib/libz.so.1 (0x00007f625e142000)
        libargon2.so.1 => /srv/slapgrid/slappart10/srv/runner/software/.../parts/argon2/lib/x86_64-linux-gnu/libargon2.so.1 (0x00007f625e9de000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f625df3a000)
        libldap-2.4.so.2 => .../shared/openldap/.../lib/libldap-2.4.so.2 (0x00007f625e991000)
        libsasl2.so.3 => .../shared/cyrus-sasl/.../lib/libsasl2.so.3 (0x00007f625e973000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f625dd36000)
        liblber-2.4.so.2 => .../shared/openldap/.../lib/liblber-2.4.so.2 (0x00007f625e963000)
        libresolv.so.2 => /lib/x86_64-linux-gnu/libresolv.so.2 (0x00007f625db1f000)
        libstdc++.so.6 => .../shared/gcc-8.4/.../lib/../lib64/libstdc++.so.6 (0x00007f625d994000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f625d690000)
        libintl.so.8 => .../shared/gettext/.../lib/libintl.so.8 (0x00007f625d485000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f625d0e6000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f625e882000)
        libjpeg.so.9 => .../shared/libjpeg/.../lib/libjpeg.so.9 (0x00007f625e924000)
        libnsl.so.1 => /lib/x86_64-linux-gnu/libnsl.so.1 (0x00007f625cece000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f625ccb1000)
        libcurl.so.4 => .../shared/curl/.../lib/libcurl.so.4 (0x00007f625e8ac000)
        libnghttp2.so.14 => .../shared/nghttp2/.../lib/libnghttp2.so.14 (0x00007f625cc87000)
        libzstd.so.1 => not found
        libfreetype.so.6 => .../shared/freetype/.../lib/libfreetype.so.6 (0x00007f625cbe8000)
        libbz2.so.1.0 => .../shared/bzip2/.../lib/libbz2.so.1.0 (0x00007f625cbd5000)
        libpng16.so.16 => .../shared/libpng/.../lib/libpng16.so.16 (0x00007f625cba0000)
        libicui18n.so.58 => .../shared/icu/.../lib/libicui18n.so.58 (0x00007f625c914000)
        libicuuc.so.58 => .../shared/icu/.../lib/libicuuc.so.58 (0x00007f625c762000)
        libicudata.so.58 => .../shared/icu/.../lib/libicudata.so.58 (0x00007f625ae60000)
        libicuio.so.58 => .../shared/icu/.../lib/libicuio.so.58 (0x00007f625ae50000)
        libxml2.so.2 => .../shared/libxml2/.../lib/libxml2.so.2 (0x00007f625aaef000)
        libgcc_s.so.1 => .../shared/gcc-8.4/.../lib/../lib64/libgcc_s.so.1 (0x00007f625aad5000)
        libzstd.so.1 => .../shared/zstd/.../lib/libzstd.so.1 (0x00007f625a9fb000)

(look at the 2 'libzstd.so.1 => ' lines above)

  $ grep zstd .../shared/curl/.../lib/pkgconfig/libcurl.pc
  supported_features="..."
  Libs.private: -lnghttp2 -lssl -lcrypto -lssl -lcrypto -lzstd -lzstd -lz -pthread

  $ ldd .../shared/curl/.../lib/libcurl.so.4
        linux-vdso.so.1 (0x00007ffc42b15000)
        libnghttp2.so.14 => .../shared/nghttp2/.../lib/libnghttp2.so.14 (0x00007f54315d5000)
        libssl.so.1.1 => .../shared/openssl/.../lib/libssl.so.1.1 (0x00007f543153f000)
        libcrypto.so.1.1 => .../shared/openssl/.../lib/libcrypto.so.1.1 (0x00007f5431168000)
        libzstd.so.1 => .../shared/zstd/.../lib/libzstd.so.1 (0x00007f543108e000)
        libz.so.1 => .../shared/zlib/.../lib/libz.so.1 (0x00007f5430e72000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f5430c55000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f54308b6000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f54306b2000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f5431454000)

This fixes the following random failure:

   .../shared/nano/3a832cf2f5e8161a0cbd45936bbdac02/bin/rnano uses system library /lib/x86_64-linux-gnu/liblzma.so.5.2.2 for liblzma.so.5

Even though there is no integrated way of putting for fonts there, cloudooo supports additional fonts in `~/srv/font`

This was not working because of a leading space in the fontconfig

See merge request nexedi/slapos!966