utils: Use 5s timeout for D-Bus get/set property calls

If the timeout param is not specified in a sdbus call, the default value
of 25s is used, if not configured in the systemd configuration file.

It turns out this timeout is too long than ideal, since the other pieces
in the IPMI stack have much smaller timeout values. For example, the
BTbridge/KCSbridge has a timeout of 5s. It is unnecessary to let ipmid
getting blocked on waiting for D-Bus replies.

This commit changes the timeout to 5 seconds on D-Bus get/set properties,
mainly because these calls are the majority of sensor read/writes which
are most subject to operation timeouts. The other D-Bus operations might
be called for object/service discovering, which might be a one-time
startup procedure.

Resolves: openbmc/openbmc#3494
Signed-off-by: Kun Yi <kunyi731@gmail.com>
Change-Id: I5a55a8eb872b1ebe8730c673231be5037d24fc0b
2 files changed