NSFS | NC | health giving trimmed output in pipe

[naveenpaul1]

Explain the changes

1. if the size of health output is bucket/account details output getting trimmed when using with pipe
   usr/local/noobaa-core/bin/node /usr/local/noobaa-core/src/cmd/health --all_bucket_details | cat
2. Update timeout for test_nc_nsfs_account_cli.test.js
3. remove unused iam_json_schema and iam_ttl

with pipe cat or tee operation getting first batch of output and before flushing second set of data process is getting exited for health command. This change will remove the process.exit() from code and make sure complete output is printed/saved to terminal/file

Issues: Fixed #xxx / Gap #xxx

1. Noobaa health command giving trimmed output in pipe #7894

Testing Instructions:

1. run below command and make sure output size more than 64 bytes
   usr/local/noobaa-core/bin/node /usr/local/noobaa-core/src/cmd/health --all_bucket_details | cat

• Doc added/updated
• Tests added

[guymguym]

Please check if my suggestion above works