Add extra detail to error message
Add extra detail to error message

The error message tells us that the times agree, but that there is a
discrepancy. It would be best to know what it is.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd