system.conf: Remove absolute keyring path

This has been updated in meta-rauc to prepare it for hermetic /usr/ [1] but,
instead of updating the current absolute path to  /usr/lib, it is better to
remove the absolute path so it works for both /etc and /usr/lib.

[1] rauc/meta-rauc@01f7e1b

Signed-off-by: Martin Abente Lahaye <mabente@igalia.com>

Author: tchx84

meta-rauc-beaglebone/recipes-core/rauc/files/beaglebone-ai64/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk1p2

meta-rauc-beaglebone/recipes-core/rauc/files/beaglebone-yocto/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk0p2

meta-rauc-beaglebone/recipes-core/rauc/files/beaglebone/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk0p2

meta-rauc-beaglebone/recipes-core/rauc/files/pocketbeagle2/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk1p2

meta-rauc-genericx86-64/recipes-core/rauc/files/genericx86-64/system.conf

@@ -5,7 +5,7 @@ grubenv=/grubenv/grubenv
 data-directory=/data/rauc
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.efi.0]
 device=/dev/sda

meta-rauc-nxp/recipes-core/rauc/files/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk1p2

meta-rauc-raspberrypi/recipes-core/rauc/files/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk0p2

meta-rauc-rockchip/recipes-core/rauc/files/system.conf

@@ -4,7 +4,7 @@ bootloader=uboot
 data-directory=/data/
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk1p10

meta-rauc-sunxi/recipes-core/rauc/files/system.conf

@@ -3,7 +3,7 @@ compatible=@@MACHINE@@
 bootloader=uboot
 
 [keyring]
-path=/etc/rauc/ca.cert.pem
+path=ca.cert.pem
 
 [slot.rootfs.0]
 device=/dev/mmcblk0p2