PXP-8779 HP-347 Feat/ecs

[mfshao]

Jira Ticket: PXP-8779 HP-347

Hachery PR for supporting decoupled workspace (design doc)

Add the following block into Hatchery config to enable decoupled workspace

 "pay-models": [{
      "user_id": "johmsmith@gmail.com",
      "aws_account_id": "12345678",
      "name": "myworkspaces",
      "region": "us-east-1",
      "ecs": "true",     --> optional, if omitted, will use EKS to spinup decoupled workspaces
      "subnet": 0
    },
   ...
]

New Features

• Decoupled workspaces can be fulfilled by either EKS or ECS
• For ECS workspaces, presistent storage volume are mounted using EFS
• Fetch pay model data from DynamoDB; temporarily allow fallbacks to the Hatchery configuration file (PR PXP-8341 Fetch pay models from DynamoDB #35)
• Traffics are routed through AWS Transit Gateway
• Mount API key to decoupled workspace container when launching, and revoke them when terminating

Improvements

• Add "Quick start for local development" docs (PR PXP-8341 Fetch pay models from DynamoDB #35)
• Mount /.gen3 directory for EKS, default mount path is /.gen3 (PR eks mount fix #33)
• Mount GEN3_ENDPOINT as env var of container
• Return idleTimeLimit and lastActivityTime from /status endpoint if exists (HP-305 Feat/kernel shutdown time #26)

Deployment changes

• Add pay-models-dynamodb-table to the Hatchery configuration file to fetch pay model data from DynamoDB (PR PXP-8341 Fetch pay models from DynamoDB #35)
• Update the Hatchery configuration file pay-models block to change the user field name to user_id (PR PXP-8341 Fetch pay models from DynamoDB #35)
• Add gen3-volume-location to the Hatchery configuration file for each container to overwrite the directory that API key will be saved to (PR eks mount fix #33)
• Update the Hatchery configuration file pay-models block to add option ecs for enabling ECS decoupled workspace
• Update the Hatchery configuration file pay-models block to add option subnet for setup transit gateway subnet addresses