chore: slightly increase max boottime for ftrace

Because now we have ftrace enabled in guest kernels,
the boot time increases slightly and no longer satisfies
150000 us time.

Signed-off-by: Egor Lazarchuk <yegorlz@amazon.co.uk>

tests/integration_tests/performance/test_boottime.py

@@ -11,7 +11,9 @@
 from framework.properties import global_props
 
 # The maximum acceptable boot time in us.
-MAX_BOOT_TIME_US = 150000
+# It is a bit bigger than the default 150_000 because
+# we have ftrace enabled in the guest kernels.
+MAX_BOOT_TIME_US = 170000
 
 # Regex for obtaining boot time from some string.
 TIMESTAMP_LOG_REGEX = r"Guest-boot-time\s+\=\s+(\d+)\s+us"