Bug#909803: freeipa-client: depends chrony should be downgraded to recommends

[Michael Stone]

severity 909803 serious
thanks

There does not seem to be any logic in the freeipa-client package to 
ensure a working time configuration after ntp is forced out in favor of 
chrony. This implies that a freeipa client may become unusable after 
upgrade once its clock has drifted far enough in the absence of a time 
source.