Comment 7 for bug 1899416

Found similar failure ("Timed out waiting for the alarm") on Azure instances:
 - impish/azure 5.11.0-1007.7+21.10.1-azure (Standard_F32s_v2, Standard_D48_v3)
 - focal/azure 5.8.0-1033.35~20.04.1-azure (Standard_D48_v3)

Reproduced (~33% times) also manually on:
 - hirsue/azure 5.11.0-1009-azure (B1ms, B4ms)
 - focal/azure 5.11.0-1007-azure (B4ms, B1ms)

rtc01 0 TINFO : RTC READ TEST:
rtc01 1 TPASS : RTC READ TEST Passed
rtc01 0 TINFO : Current RTC date/time is 11-6-2021, 09:00:58.
rtc01 0 TINFO : RTC ALARM TEST :
rtc01 0 TINFO : Alarm time set to 09:01:03.
rtc01 0 TINFO : Waiting 5 seconds for the alarm...
rtc01 2 TFAIL : rtc01.c:151: Timed out waiting for the alarm
rtc01 0 TINFO : RTC UPDATE INTERRUPTS TEST :
rtc01 0 TINFO : Waiting for 5 update interrupts...
rtc01 0 TINFO : Update interrupt 1
rtc01 0 TINFO : Update interrupt 2
rtc01 0 TINFO : Update interrupt 3
rtc01 0 TINFO : Update interrupt 4
rtc01 0 TINFO : Update interrupt 5
rtc01 3 TPASS : RTC UPDATE INTERRUPTS TEST Passed
rtc01 0 TINFO : RTC Tests Done!