automation: remove CR characters from serial output

The gitlab CI webpage seems to have issues displaying the \CR\CR\LF "\r\r\n"
sequence on the web interface used as line returns by the Linux kernel serial
output.  This leads to the QEMU tests output looking like:

(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) *** Serial input to DOM0 (type 'CTRL-a' three times to switch input)
(XEN) Freed 664kB init memory
mapping kernel into physical memory
about to get started...
qemu-system-x86_64: terminating on signal 15 from pid 52 (timeout)

This not helpful, so strip the CR characters from the output that goes to
stdout, leaving the output in the serial output file untouched.

All usages of `tee` are adjusted to strip CR from the output.

Fixes: 3030a73bf8 ('automation: add a QEMU based x86_64 Dom0/DomU test')
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

automation/scripts/qemu-alpine-x86_64.sh

@@ -84,7 +84,10 @@ qemu-system-x86_64 \
     -monitor none -serial stdio \
     -nographic \
     -device virtio-net-pci,netdev=n0 \
-    -netdev user,id=n0,tftp=binaries,bootfile=/pxelinux.0 |& tee smoke.serial
+    -netdev user,id=n0,tftp=binaries,bootfile=/pxelinux.0 |& \
+        # Remove carriage returns from the stdout output, as gitlab
+        # interface chokes on them
+        tee smoke.serial | sed 's/\r//'
 
 set -e
 (grep -q "Domain-0" smoke.serial && grep -q "BusyBox" smoke.serial) || exit 1

automation/scripts/qemu-smoke-dom0-arm32.sh

@@ -91,7 +91,8 @@ timeout -k 1 720 \
    -no-reboot \
    -device virtio-net-pci,netdev=n0 \
    -netdev user,id=n0,tftp=./ \
-   -bios /usr/lib/u-boot/qemu_arm/u-boot.bin |& tee ${serial_log}
+   -bios /usr/lib/u-boot/qemu_arm/u-boot.bin |& \
+      tee ${serial_log} | sed 's/\r//'
 
 set -e
 (grep -q "Domain-0" ${serial_log} && grep -q "^/ #" ${serial_log}) || exit 1

automation/scripts/qemu-smoke-dom0-arm64.sh

@@ -104,7 +104,8 @@ timeout -k 1 720 \
     -no-reboot \
     -device virtio-net-pci,netdev=n0 \
     -netdev user,id=n0,tftp=binaries \
-    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& tee smoke.serial
+    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& \
+        tee smoke.serial | sed 's/\r//'
 
 set -e
 (grep -q "Domain-0" smoke.serial && grep -q "BusyBox" smoke.serial) || exit 1

automation/scripts/qemu-smoke-dom0less-arm32.sh

@@ -137,7 +137,8 @@ timeout -k 1 240 \
     -no-reboot \
     -device virtio-net-pci,netdev=n0 \
     -netdev user,id=n0,tftp=./ \
-    -bios /usr/lib/u-boot/qemu_arm/u-boot.bin |& tee ${serial_log}
+    -bios /usr/lib/u-boot/qemu_arm/u-boot.bin |& \
+        tee ${serial_log} | sed 's/\r//'
 
 set -e
 (grep -q "${dom0_prompt}" ${serial_log} && grep -q "${passed}" ${serial_log}) || exit 1

automation/scripts/qemu-smoke-dom0less-arm64.sh

@@ -201,7 +201,8 @@ timeout -k 1 240 \
     -no-reboot \
     -device virtio-net-pci,netdev=n0 \
     -netdev user,id=n0,tftp=binaries \
-    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& tee smoke.serial
+    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& \
+        tee smoke.serial | sed 's/\r//'
 
 set -e
 (grep -q "^Welcome to Alpine Linux" smoke.serial && grep -q "${passed}" smoke.serial) || exit 1

automation/scripts/qemu-smoke-riscv64.sh

@@ -13,7 +13,7 @@ qemu-system-riscv64 \
     -nographic \
     -m 2g \
     -kernel binaries/xen \
-    |& tee smoke.serial
+    |& tee smoke.serial | sed 's/\r//'
 
 set -e
 (grep -q "All set up" smoke.serial) || exit 1

automation/scripts/qemu-xtf-dom0less-arm64.sh

@@ -61,7 +61,8 @@ timeout -k 1 120 \
     -no-reboot \
     -device virtio-net-pci,netdev=n0 \
     -netdev user,id=n0,tftp=binaries \
-    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& tee smoke.serial
+    -bios /usr/lib/u-boot/qemu_arm64/u-boot.bin |& \
+        tee smoke.serial | sed 's/\r//'
 
 set -e
 (grep -q "${passed}" smoke.serial) || exit 1

automation/scripts/qubes-x86-64.sh

@@ -200,7 +200,7 @@ cp -f binaries/dom0-rootfs.cpio.gz $TFTP/initrd-dom0
 # the console
 mkfifo /tmp/console-stdin
 cat /tmp/console-stdin |\
-ssh $CONTROLLER console | tee smoke.serial &
+ssh $CONTROLLER console | tee smoke.serial | sed 's/\r//' &
 
 # start the system pointing at gitlab-ci predefined config
 ssh $CONTROLLER gitlabci poweron

automation/scripts/xilinx-smoke-dom0less-arm64.sh

@@ -136,7 +136,7 @@ cd $START
 # connect to serial
 set +e
 stty -F /dev/ttyUSB0 115200
-timeout -k 1 120 nohup sh -c "cat /dev/ttyUSB0 | tee smoke.serial"
+timeout -k 1 120 nohup sh -c "cat /dev/ttyUSB0 | tee smoke.serial | sed 's/\r//'"
 
 # stop the board
 cd /scratch/gitlab-runner