import command doesn't throw error for invalid json

Currently, abc doesn't throw an error when we have an invalid JSON file, rather it succeeds with 0 records inserted.

## How to replicate
* Create an invalid JSON file. Here file has extra `,`

```
echo '[
{
"name": "jame",
"email": "jame@yopmail.com",
}
]' > test1.json
```
* Try abc command
`abc import --src_type=json --src_uri=test1.json --log.level=debug http://admin:admin@localhost:9200/test`

* `abc` version used here: `1.0.0 Preview Release 2`

## Expected output

Command should throw an error with correct exit status, if the command fails