ci/bare-metal: Add timeouts to the shell commands called in fastboot.

It seems that we sometimes stall out executing "fastboot boot", and if
that happens we want to reboot the board and try again.

Fixes: #6682
Acked-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17607>

.gitlab-ci/bare-metal/fastboot_run.py

@@ -22,7 +22,7 @@
 # IN THE SOFTWARE.
 
 import argparse
-import os
+import subprocess
 import re
 from serial_buffer import SerialBuffer
 import sys
@@ -46,13 +46,17 @@ class FastbootRun:
         NO_COLOR = '\033[0m'
         print(RED + message + NO_COLOR)
 
-    def logged_system(self, cmd):
+    def logged_system(self, cmd, timeout=60):
         print("Running '{}'".format(cmd))
-        return os.system(cmd)
+        try:
+            return subprocess.call(cmd, shell=True, timeout=timeout)
+        except subprocess.TimeoutExpired:
+            self.print_error("timeout, restarting run...")
+            return 2
 
     def run(self):
-        if self.logged_system(self.powerup) != 0:
-            return 1
+        if ret := self.logged_system(self.powerup):
+            return ret
 
         fastboot_ready = False
         for line in self.ser.lines(timeout=2 * 60, phase="bootloader"):
@@ -71,8 +75,8 @@ class FastbootRun:
                 "Failed to get to fastboot prompt, restarting run...")
             return 2
 
-        if self.logged_system(self.fastboot) != 0:
-            return 1
+        if ret := self.logged_system(self.fastboot):
+            return ret
 
         print_more_lines = -1
         for line in self.ser.lines(timeout=self.test_timeout, phase="test"):