CLOUDP-73729: mongocli ops-manager admin backup s3 describe

[andreaangiolillo]

Proposed changes

Jira ticket: CLOUDP-73729

Checklist

• I have signed the MongoDB CLA
• I have added tests that prove my fix is effective or that my feature works
• I have added any necessary documentation (if appropriate)
• I have run make fmt and formatted my code

Further comments

./bin/mongocli om admin backup s3 describe andrea.angiolillo.bucket -P ops
ID                         URI                         SSL     LOAD FACTOR   AUTH METHOD
andrea.angiolillo.bucket   mongodb://127.0.0.1:27017   false   50            KEYS

./bin/mongocli om admin backup s3 describe andrea.angiolillo.bucket -P ops -o json
{
  "id": "andrea.angiolillo.bucket",
  "uri": "mongodb://127.0.0.1:27017",
  "writeConcern": "ACKNOWLEDGED",
  "ssl": false,
  "assignmentEnabled": true,
  "encryptedCredentials": false,
  "loadFactor": 50,
  "awsAccessKey": "XXXXXX",
  "awsSecretKey": "XXXXXXXXXXX",
  "s3AuthMethod": "KEYS",
  "s3BucketEndpoint": "s3-eu-west-1.amazonaws.com",
  "s3BucketName": "andrea.angiolillo.bucket",
  "s3MaxConnections": 50,
  "disableProxyS3": true,
  "acceptedTos": true,
  "sseEnabled": false,
  "pathStyleAccessEnabled": false
}

[gssbzn]

LGTM one small suggestion but we can do that later

[gssbzn]

LGTM