Add SupportBundle collection functionalities

[wsquan171]

This PR adds support bundle collection functionalities to Theia manager.

A new API endpoint apis/system.theia.antrea.io/v1alpha1/supportbundles is added to trigger / retrieve log bundle collection. The following logs will be collected as part of the operation:

• Flow Aggregator logs (copied from /var/log/antrea/flow-aggregator/)
• Theia Manager logs (local log files)
• ClickHouse server logs (copied from /var/log/clickhouse-server/)
• Grafana logs (copied from /var/log/grafana/)
• Spark operator, driver and executor logs, if available during PR job (via streaming console logs)
• zookeeper (via streaming console logs)

The following file structure is to be expected after successful collection:

vagrant@k8s-node-worker-1:~/logs$ tree
.
├── clickhouse-server
│   └── chi-clickhouse-clickhouse-0-0-0
│       ├── clickhouse-server.err.log
│       └── clickhouse-server.log
├── flow-aggregator
│   └── flow-aggregator-7f7cb66494-2w7dd
│       ├── flow-aggregator.flow-aggregator-7f7cb66494-2w7dd.root.log.INFO.20221123-203357.1
│       └── flow-aggregator.flow-aggregator-7f7cb66494-2w7dd.root.log.WARNING.20221123-210132.1
├── grafana
│   └── grafana-5b756cff8f-8ldb5
│       └── grafana.log
├── spark-driver
│   ├── pr-31011183-e862-4d0c-8d77-ab662312d278-driver
│   │   └── pr-31011183-e862-4d0c-8d77-ab662312d278-driver.log
│   └── pr-c36ce363-cc40-423f-b9ce-e39b8aa135de-driver
│       └── pr-c36ce363-cc40-423f-b9ce-e39b8aa135de-driver.log
├── spark-executor
│   └── pr-31011183-e862-4d0c-8d77-ab662312d278-fc3a7484a6b7564d-exec-1
│       └── pr-31011183-e862-4d0c-8d77-ab662312d278-fc3a7484a6b7564d-exec-1.log
├── spark-operator
│   └── policy-recommendation-spark-operator-84fb967df5-rs6mh
│       └── policy-recommendation-spark-operator-84fb967df5-rs6mh.log
├── theia-manager
│   ├── theia-manager.theia-manager-c54b85496-mzlzh.root.log.ERROR.20221123-214555.1
│   ├── theia-manager.theia-manager-c54b85496-mzlzh.root.log.INFO.20221123-213428.1
│   └── theia-manager.theia-manager-c54b85496-mzlzh.root.log.WARNING.20221123-214555.1
└── zookeeper
    └── zookeeper-0
        └── zookeeper-0.log

Logging configuration of ClickHouse and Grafana are also added to enable better configuration of log level and detention control.

To trigger log collection, or retrieve a log bundle job that finished earlier, simply run:
theia supportbundle

Theia CLI optional arg --since currently only supports filtering logs collected from Theia manager and Flow aggregator. Support of other components will be added in a future change.

Close #62

[wsquan171]

/theia-test-e2e

[yuntanghsu]

Overall LGTM, some nits.

[ziyouw]

Sorry, check this late due to the sick leave. LGTM, thanks!

[salv-orlando]

@wsquan171 no additional comments from me. I think we can merge this PR.