Add an interval timing loop for all the grpc scripts that did not already have one. Organized some of the code into functions in order to facilitate this, which caused some problems with local variables vs global ones, so moved the script code into a proper main() function. Which didn't really solve the access to globals issue, so also moved the mutable state into a class instance.
The interval timer should be relatively robust against time drift due to the loop function running time and/or OS scheduler delay, but is far from perfect.
Retry logic is now in place for both InfluxDB scripts. Retry for dishStatusInflux.py is slightly changed in that a failed write to InfluxDB server will be retried on every interval, rather than waiting for another batch full of data points to write, but this only happens once there is at least a full batch (currently 6) of data points pending. This new behavior matches how the autocommit functionality on SeriesHelper works.
Changed the default behavior of dishStatusInflux.py to not loop, in order to match the other scripts. To get the old behavior, add a '-t 30' option to the command line.
Closes#9
Unlike the status info scripts, these include support for setting host and database parameters via command line options. Still to be added is support for HTTPS/SSL.
Add a get_id function to the grpc parser module, so it can be used for tagging purposes.
Minor cleanups in some of the other scripts to make them consistent with the newly added scripts.
Move the "samples" stat out of the ping drop group of stats and into a new general stats group.
This way, it will make more sense if/when additional stat groups are added, since that stat will apply to all of them.
Moves the parsing logic that will be shared by some upcoming scripts out into a separate module.
There's still just as much duplication between the JSON parser and the grpc parser as there was before, but this should at least prevent further duplication of this logic.
This also adds some proper documentation for what each of the stats means.
Doesn't ever seem to happen, but in case it does in the future, treat that case as just unscheduled. This way, the unclassified ping loss (AKA "Beta downtime") can be computed from the totals.
