/etc/os-release isn't created

[Yasuhiro KIMURA]

Hello,

Yesterday I updated my 13-CURRENT host from r354592 to r355028 and
/etc/os-release symbolic link wasn't created.

yasu at rolling-vm-freebsd1[2061]% uname -a
FreeBSD rolling-vm-freebsd1.home.utahime.org 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r355028: Sat Nov 23 22:35:58 JST 2019     rootz at rolling-vm-freebsd1.home.utahime.org:/usr0/freebsd/base/obj/usr0/freebsd/base/head/amd64.amd64/sys/GENERIC  amd64
yasu at rolling-vm-freebsd1[2062]% ls -l /etc/os-release
ls: /etc/os-release: No such file or directory
yasu at rolling-vm-freebsd1[2063]%

But after that I made same update of 13-CURRENT poudriere jail and
then /etc/os-release was created in it.

yasu at rolling-vm-freebsd1[2063]% ls -l /usr/local/poudriere/jails/curamd64/etc/os-release
lrwxr-xr-x  1 root  wheel  21 Nov 24 05:04 /usr/local/poudriere/jails/curamd64/etc/os-release@ -> ../var/run/os-releaseyasu at rolling-vm-freebsd1[2064]% 

Why such difference happens?

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Yasuhiro KIMURA