The test might run on different platforms. If the platform happens
to have a RTC that does exist but unable to have RTC_UIE_ON set the
test will fail, while the chrony code is actually good.
Examples of bad clocks are:
- ppc64el: rtc-generic
- arm64: rtc-efi
To avoid that extend the log message check on 101-rtc to accept
that condition as a valid test result as well.
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>