support HTTP Attack on chaosd

[Andrewmatilde]

Signed-off-by: andrewmatilde davis6813585853062@outlook.com Please install chaos-tproxy before use the HTTP attack. usage:

./bin/chaosd attack http abort -h
abort selected HTTP Package

Usage:
  chaosd attack http abort [flags]

Flags:
  -c, --code int32          Code is a rule to select target by http status code in response.
  -h, --help                help for abort
  -m, --method string       HTTP method
      --path string         Mathc path of Uri with wildcard matches.
      --port int32          port is a rule to select server listening on specific port.
  -p, --proxy_ports uints   composed with one of the port of HTTP connection, we will only attack HTTP connection with port inside proxy_ports (default [])
  -t, --target string       HTTP target: Request or Response

Global Flags:
      --log-level string   the log level of chaosd. The value can be 'debug', 'info', 'warn' and 'error'
      --uid string         the experiment ID

./bin/chaosd attack http delay -h
delay selected HTTP Package

Usage:
  chaosd attack http delay [flags]

Flags:
  -c, --code int32          Code is a rule to select target by http status code in response.
  -d, --delay time string   Delay represents the delay of the target request/response.
  -h, --help                help for delay
  -m, --method string       HTTP method
      --path string         Mathc path of Uri with wildcard matches.
      --port int32          port is a rule to select server listening on specific port.
  -p, --proxy_ports uints   composed with one of the port of HTTP connection, we will only attack HTTP connection with port inside proxy_ports (default [])
  -t, --target string       HTTP target: Request or Response

Global Flags:
      --log-level string   the log level of chaosd. The value can be 'debug', 'info', 'warn' and 'error'
      --uid string         the experiment ID

./bin/chaosd attack http file -h
attack with config file

Usage:
  chaosd attack http file [flags]

Flags:
  -p, --file path string   Config file path.
  -h, --help               help for file

Global Flags:
      --log-level string   the log level of chaosd. The value can be 'debug', 'info', 'warn' and 'error'
      --uid string         the experiment ID

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• WangXiangUSTC

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[Andrewmatilde]

PTAL @WangXiangUSTC

[WangXiangUSTC]

@Hexilee PTAL

[ti-chi-bot]

@Hexilee: Thanks for your review. The bot only counts approvals from reviewers and higher roles in list, but you're still welcome to leave your comments.

In response to [this](https://github.com/chaos-mesh/chaosd/pull/165#pullrequestreview-996275819): >LGTM Instructions for interacting with me using PR comments are available [here](https://prow.tidb.io/command-help). If you have questions or suggestions related to my behavior, please file an issue against the [ti-community-infra/tichi](https://github.com/ti-community-infra/tichi/issues/new?title=Prow%20issue:) repository.