images: Ensure that the useradd(8), etc. manuals are available

The shadow-utils package has always been part of the fedora base image.
It's explicitly listed in extra-packages as a safeguard against losing
useradd(8) and usermod(8) by mistake because they are needed by the
entry point of a Toolbx container [1].  Hence, the need to restore the
shadow-utils documentation that was stripped out in the base image.

Only the images for currently maintained Fedoras (ie., 37, 38 and 39)
were updated.

[1] Commit c6772f0f11
    https://github.com/containers/toolbox/commit/c6772f0f112e8004

https://github.com/containers/toolbox/pull/1394

images/fedora/f37/ensure-files

@@ -17,6 +17,10 @@
 /usr/share/man/ja/man8/rpm.8*
 /usr/share/man/man8/rpm.8*
 
+/usr/share/man/fr/man8/useradd.8*
+/usr/share/man/ja/man8/useradd.8*
+/usr/share/man/man8/useradd.8*
+
 /usr/share/man/man1/cal.1.*
 /usr/share/man/man1/getopt.1*
 /usr/share/man/man1/hexdump.1*

images/fedora/f37/missing-docs

@@ -14,6 +14,7 @@ pam
 python3
 rpm
 sed
+shadow-utils
 sudo
 systemd
 tar

images/fedora/f38/ensure-files

@@ -17,6 +17,10 @@
 /usr/share/man/ja/man8/rpm.8*
 /usr/share/man/man8/rpm.8*
 
+/usr/share/man/fr/man8/useradd.8*
+/usr/share/man/ja/man8/useradd.8*
+/usr/share/man/man8/useradd.8*
+
 /usr/share/man/man1/cal.1.*
 /usr/share/man/man1/getopt.1*
 /usr/share/man/man1/hexdump.1*

images/fedora/f38/missing-docs

@@ -14,6 +14,7 @@ pam
 python3
 rpm
 sed
+shadow-utils
 sudo
 systemd
 tar

images/fedora/f39/ensure-files

@@ -16,6 +16,10 @@
 /usr/share/man/man8/rpm.8*
 /usr/share/man/man8/rpm2cpio.8*
 
+/usr/share/man/fr/man8/useradd.8*
+/usr/share/man/ja/man8/useradd.8*
+/usr/share/man/man8/useradd.8*
+
 /usr/share/man/man1/cal.1.*
 /usr/share/man/man1/getopt.1*
 /usr/share/man/man1/hexdump.1*

images/fedora/f39/missing-docs

@@ -14,6 +14,7 @@ pam
 python3
 rpm
 sed
+shadow-utils
 sudo
 systemd
 tar