This changes our smartsense DTHs that don't use the ZigBee library for
everything to have larger delays between ZigBee messages. This is to
reduce the network load to try to work around some of the poorer
behaving ZigBee routers we support.
This resolves: https://smartthings.atlassian.net/browse/DPROT-223
Previously a few places depended on the dev-conn behavior of
automatically appending a send command after a raw zigbee command. We
intend to deprecate that behavior and so we are adding explicit sends
where they were missing.
Jack Chi