C2D: Docker engine compute envs

[alexcos20]

Tasks:

• define an env var, called DOCKER_COMPUTE_ENVIRONMENTS which sets the docker paid compute envs(multiple) (see https://github.com/oceanprotocol/ocean-node/blob/feature/c2d_docker/src/components/c2d/compute_engine_docker.ts#L67)

• define an env var, called DOCKER_FREE_COMPUTE, which sets the options for https://github.com/oceanprotocol/ocean-node/blob/feature/c2d_docker/src/components/c2d/compute_engine_docker.ts#L673-L687)

• allow user to set them properly in ocean-node-quickstart.sh

Example of "DOCKER_COMPUTE_ENVIRONMENTS":

[
  {
    "cpuNumber": 2,
    "ramGB": 4,
    "diskGB": 10,
    "desc": "2Cpu,2gbRam - price 1 OCEAN/minute, max 1 hour",
    "maxJobs": 10,
    "storageExpiry": 36000,
    "maxJobDuration": 3600,
    "chainId": 1,
    "feeToken": "0x967da4048cD07aB37855c090aAF366e4ce1b9F48",
    "priceMin": 1
  },

  {
    "cpuNumber": 12,
    "ramGB": 24,
    "diskGB": 30,
    "desc": "12Cpu,24gbRam - price 2 USDT minute, max 1 day",
    "maxJobs": 10,
    "storageExpiry": 36000,
    "maxJobDuration": 86400,
    "chainId": 1,
    "feeToken": "0xdAC17F958D2ee523a2206206994597C13D831ec7",
    "priceMin": 2
  }
]

Checks:

• if there is a fee token, make sure that we have a price, and the other way around
• check that storageExpiry is longer than maxJobDuration
• etc

[paulo-ocean]

this is part of #705