feat(dracut-strip-trigger): use config files instead (#6549) (#6550)

Instead of spending the double amount of time regenerating the initramfs
twice by adding a transaction trigger in the RPM, a better way is to
simply just add a Dracut config file to set up aggressive stripping.

Also adds a conflict to `dracut-config-generic` since that does the
opposite of what this package does. If you wanted to install this
package you'd not want this installed anyway, since both conflict with
each other.

(cherry picked from commit f361f18b3d)

Co-authored-by: Pornpipat Popum <cappy@cappuchino.xyz>

anda/system/dracut-strip-trigger/01-aggressive-strip.conf

@@ -0,0 +1,3 @@
+do_strip=yes
+aggressive_strip=yes
+hostonly=yes

anda/system/dracut-strip-trigger/dracut-strip-trigger.spec

@@ -1,10 +1,12 @@
 Name:		dracut-strip-trigger
 Version:	0
-Release:	4%?dist
+Release:	5%?dist
 Summary:	Strip initramfs aggressively
 License:	GPL-3.0-only
 Requires:	dracut installonlypkg(kernel)
+Conflicts:  dracut-config-generic
 Source0:	LICENSE
+Source1:    01-aggressive-strip.conf
 
 %global _desc %{expand:
 Strip initramfs automatically for each kernel update using --hostonly --aggressive-strip.
@@ -19,19 +21,21 @@ cat<<EOF > README
 EOF
 cp %{S:0} .
 
+%install
+mkdir -p %{buildroot}/usr/lib/dracut/dracut.conf.d/
+cp %{S:1} %{buildroot}/usr/lib/dracut/dracut.conf.d/
+
 %files
+/usr/lib/dracut/dracut.conf.d/01-aggressive-strip.conf
 %doc README
 %license LICENSE
 
 %post
 echo 'Regenerating all initramfs…'
-dracut --force --parallel --regenerate-all --hostonly --strip --aggressive-strip
+dracut --force --parallel --regenerate-all
 echo 'All non-rescue initramfs have been regenerated.'
 echo 'If you have problems booting up, use the rescue image, then uninstall `%name`.'
 
-%transfiletriggerin -P 1 -- /boot
-dracut --force --hostonly --strip --aggressive-strip $(stat --format '%Y %y $%n' /boot/initramfs* | sort -nr | cut -d$ -f2- | head -n1)
-
 %postun
 [ $1 = 0 ] && echo 'Regenerating all initramfs…'
-[ $1 = 0 ] && dracut --force --parallel --regenerate-all --no-hostonly --strip
+[ $1 = 0 ] && dracut --force --parallel --regenerate-all