Update various .gitignore files.

etc/.gitignore

@@ -4,13 +4,21 @@
 /PackageKit/
 /X11/
 /adduser.conf
+/adjtime
 /alternatives/
 /apparmor.d/
+/auto.master
+/auto.misc
+/auto.net
+/auto.smb
+/autofs.conf
 /bash.bashrc
+/bash_completion
 /bash_completion.d/
 /bindresvport.blacklist
 /ca-certificates.conf
 /ca-certificates/
+/cracklib/
 /dbus-1/
 /debconf.conf
 /debian_version
@@ -18,11 +26,13 @@
 /devuan_version
 /dhcp/
 /dpkg/
+/e2scrub.conf
 /elogind/
 /environment
 /ethertypes
 /fonts/
 /gai.conf
+/grub.d/
 /group-
 /gshadow
 /gshadow-
@@ -30,6 +40,8 @@
 /gssapi_mech.conf
 /host.conf
 /hosts.*
+/idmapd.conf
+/initramfs-tools/
 /inittab
 /inputrc
 /insserv/
@@ -48,16 +60,21 @@
 /logcheck/
 /lynx/
 /machine-id
+/magic
+/magic.mime
 /mime.types
 /mailcap
 /mailcap.order
 /manpath.config
 /mime.types
+/mke2fs.conf
+/modules
 /msmtprc
 /mtab
 /nanorc
 /netconfig
 /networks
+/nfs.conf
 /nsswitch.conf
 /oddjobd.conf
 /oddjobd.conf.d/
@@ -66,12 +83,15 @@
 /pam.conf
 /passwd-
 /perl/
+/pm/
 /profile
 /profile.d/
 /protocols
 /python3.13/
 /python3/
 /rc?.d/
+/request-key.conf
+/request-key.d/
 /rmt
 /rpc
 /rsyncd.passwd
@@ -97,6 +117,7 @@
 /systemd/
 /terminfo/
 /ucf.conf
+/udev/
 /ufw/
 /update-motd.d/
 /vim/