scripts: Add a logrotate file for /var/log/boot.log

Since plymouth concatenates boot logs one after the other in
/var/log/boot.log, causing it to grow endlessly. we need to logrotrate it.

Fixes #31

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

scripts/Makefile.am

@@ -6,9 +6,13 @@ initrdscript_SCRIPTS = plymouth-update-initrd plymouth-generate-initrd plymouth-
 sbinscriptsdir = $(sbindir)
 sbinscripts_SCRIPTS = plymouth-set-default-theme
 
+bootlogdir = $(sysconfdir)/logrotate.d
+bootlog_DATA = bootlog
+
 EXTRA_DIST= plymouth-update-initrd                                             \
 	    plymouth-generate-initrd.in                                        \
 	    plymouth-populate-initrd.in                                        \
-	    plymouth-set-default-theme.in                                     \
+	    plymouth-set-default-theme.in                                      \
 	    $(noinst_SCRIPTS)                                                  \
+	    bootlog                                                            \
 	    default.cfg

scripts/bootlog

@@ -0,0 +1,8 @@
+/var/log/boot.log
+{
+    missingok
+    daily
+    copytruncate
+    rotate 7
+    notifempty
+}