address help issues in the expanded reset command

[bmc-msft]

The expanded reset command now includes help documentation for each of the arguments.

With this PR, the help looks like this:

$ onefuzz reset --help
usage: onefuzz reset [-h] [-v] [--format {json,raw}] [--query QUERY] [--containers] [--everything] [--jobs] [--notifications] [--pools]
                     [--repros] [--scalesets] [--tasks] [--yes]

optional arguments:
  -h, --help           show this help message and exit
  -v, --verbose        increase output verbosity
  --format {json,raw}  output format
  --query QUERY        JMESPath query string. See http://jmespath.org/ for more information and examples.
  --containers         Delete all the containers. (Default: False. Sets value to True)
  --everything         Delete all containers, pools and managed scalesets. (Default: False. Sets value to True)
  --jobs               Stop all jobs. (Default: False. Sets value to True)
  --notifications      Stop all notifications. (Default: False. Sets value to True)
  --pools              Delete all pools. (Default: False. Sets value to True)
  --repros             Delete all repro vms. (Default: False. Sets value to True)
  --scalesets          Delete all managed scalesets. (Default: False. Sets value to True)
  --tasks              Stop all tasks. (Default: False. Sets value to True)
  --yes                Ignoring to specify "y" in prompt. (Default: False. Sets value to True)
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