With two independent checks now writing to the same log, messages like
"system uptime only N seconds does not meet 1800 second requirement" were
ambiguous about which check they came from. Prefix every line with a
[minion-restart-check] or [boot-highstate-check] tag and reword the uptime,
threshold, and healthy messages to say what was evaluated and why it was
skipped.
Restructure the boot-highstate check from a nested if into an if/elif chain so
each outcome (restart already queued, uptime too low, healthy, already running,
forcing) logs its own reason instead of silently doing nothing.
Josh Patterson
ed533efb7b