Adding needed font for ja PDF builds.

[JulienPalard]

see: python/python-docs-ja#31 (comment)

I'm trying it manually before, to ensure that's why we need, nothing more is needed, and it actually fix the proble, so please don't merge now.

[JulienPalard]

Installed it manually:

root@docs:~# apt install fonts-noto

mdk@docs:~$ sudo su -
root@docs:~# apt install fonts-noto
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following additional packages will be installed:
  fonts-noto-cjk fonts-noto-cjk-extra fonts-noto-color-emoji fonts-noto-core fonts-noto-extra fonts-noto-ui-core fonts-noto-ui-extra fonts-noto-unhinted
The following NEW packages will be installed:
  fonts-noto fonts-noto-cjk fonts-noto-cjk-extra fonts-noto-color-emoji fonts-noto-core fonts-noto-extra fonts-noto-ui-core fonts-noto-ui-extra fonts-noto-unhinted
0 upgraded, 9 newly installed, 0 to remove and 13 not upgraded.
Need to get 290 MB of archives.
After this operation, 755 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 fonts-noto-core all 20200323-1build1~ubuntu20.04.1 [10.9 MB]
Get:2 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 fonts-noto all 20200323-1build1~ubuntu20.04.1 [17.6 kB]
Get:3 http://us.archive.ubuntu.com/ubuntu focal/main amd64 fonts-noto-cjk all 1:20190410+repack1-2 [55.7 MB]
Get:4 http://us.archive.ubuntu.com/ubuntu focal/main amd64 fonts-noto-cjk-extra all 1:20190410+repack1-2 [131 MB]
Get:5 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 fonts-noto-color-emoji all 0~20200916-1~ubuntu20.04.1 [9940 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 fonts-noto-extra all 20200323-1build1~ubuntu20.04.1 [68.8 MB]
Get:7 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 fonts-noto-ui-core all 20200323-1build1~ubuntu20.04.1 [1326 kB]
Get:8 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 fonts-noto-ui-extra all 20200323-1build1~ubuntu20.04.1 [11.9 MB]
Get:9 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 fonts-noto-unhinted all 20200323-1build1~ubuntu20.04.1 [252 kB]
Fetched 290 MB in 3s (115 MB/s)          
Selecting previously unselected package fonts-noto-core.
(Reading database ... 236592 files and directories currently installed.)
Preparing to unpack .../0-fonts-noto-core_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-core (20200323-1build1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto.
Preparing to unpack .../1-fonts-noto_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto (20200323-1build1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto-cjk.
Preparing to unpack .../2-fonts-noto-cjk_1%3a20190410+repack1-2_all.deb ...
Unpacking fonts-noto-cjk (1:20190410+repack1-2) ...
Selecting previously unselected package fonts-noto-cjk-extra.
Preparing to unpack .../3-fonts-noto-cjk-extra_1%3a20190410+repack1-2_all.deb ...
Unpacking fonts-noto-cjk-extra (1:20190410+repack1-2) ...
Selecting previously unselected package fonts-noto-color-emoji.
Preparing to unpack .../4-fonts-noto-color-emoji_0~20200916-1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-color-emoji (0~20200916-1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto-extra.
Preparing to unpack .../5-fonts-noto-extra_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-extra (20200323-1build1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto-ui-core.
Preparing to unpack .../6-fonts-noto-ui-core_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-ui-core (20200323-1build1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto-ui-extra.
Preparing to unpack .../7-fonts-noto-ui-extra_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-ui-extra (20200323-1build1~ubuntu20.04.1) ...
Selecting previously unselected package fonts-noto-unhinted.
Preparing to unpack .../8-fonts-noto-unhinted_20200323-1build1~ubuntu20.04.1_all.deb ...
Unpacking fonts-noto-unhinted (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-color-emoji (0~20200916-1~ubuntu20.04.1) ...
Setting up fonts-noto-ui-extra (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-extra (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-cjk (1:20190410+repack1-2) ...
Setting up fonts-noto-unhinted (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-ui-core (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-core (20200323-1build1~ubuntu20.04.1) ...
Setting up fonts-noto-cjk-extra (1:20190410+repack1-2) ...
Setting up fonts-noto (20200323-1build1~ubuntu20.04.1) ...
Processing triggers for fontconfig (2.13.1-2ubuntu3) ...
root@docs:~# 

Running a manual build of the ja doc:

docsbuild@docs:/srv/docsbuild/scripts$ /srv/docsbuild/venv/bin/python /srv/docsbuild/scripts/build_docs.py --branch 3.9 --language ja

we'll see...

[JulienPalard]

OK, the PDF did not built but with another error, so it looks like this PR has helped, I think it can be merged.

[JulienPalard]

Wow, so fast!