[telemetry] When launching an application elevated, check if it has NOPASSWD in sudoers.

tools/telemetry/telemetry/core/platform/linux_platform_backend.py

Index: tools/telemetry/telemetry/core/platform/linux_platform_backend.py
diff --git a/tools/telemetry/telemetry/core/platform/linux_platform_backend.py b/tools/telemetry/telemetry/core/platform/linux_platform_backend.py
index 54fde65707b7e81da791bab67dc4d8b1a485da6b..d29fd4e2efc282b8bd95a78356403d489076a029 100644
--- a/tools/telemetry/telemetry/core/platform/linux_platform_backend.py
+++ b/tools/telemetry/telemetry/core/platform/linux_platform_backend.py
@@ -145,9 +145,10 @@ class LinuxPlatformBackend(
 
     if changed or not self.CanLaunchApplication('ipfw'):
       if not self._IsIpfwKernelModuleInstalled():
-        subprocess.check_call(['sudo', 'insmod', ipfw_mod])
+        subprocess.check_call(['/usr/bin/sudo', 'insmod', ipfw_mod])
       os.chmod(ipfw_bin, 0755)
-      subprocess.check_call(['sudo', 'cp', ipfw_bin, '/usr/local/sbin'])
+      subprocess.check_call(
+          ['/usr/bin/sudo', 'cp', ipfw_bin, '/usr/local/sbin'])
 
     assert self.CanLaunchApplication('ipfw'), 'Failed to install ipfw. ' \
         'ipfw provided binaries are not supported for linux kernel < 3.13. ' \