### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Currently the VTL template for `request_templates` is not processed properly:

```
#set( $body = $input.json("$") )

#macro( loop $map )
{
    #foreach($key in $map.keySet())
        #set( $k = $util.escapeJavaScript($key) )
        #set( $v = $util.escapeJavaScript($map.get($key)).replaceAll("\\'", "'") )
        "$k": "$v"
        #if( $foreach.hasNext ) , #end
    #end
}
#end

{
    "enhancedAuthContext": #loop($context.authorizer),

    "headers": #loop($input.params().header),

    "query": #loop($input.params().querystring),

    "path": #loop($input.params().path),

    "identity": #loop($context.identity),

    "stageVariables": #loop($stageVariables),
}
EOF
}
```

results in,

```
'

{
    "enhancedAuthContext": {
    }
,

    "headers": {
    }
,

    "query": {
    }
,

    "path": {
    }
,

    "identity": {
    }
,

    "stageVariables": {
    }
,
}
'
```

### Expected Behavior

The template should be rendered and have the JSON properties.

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    docker run localstack/localstack

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

    awslocal s3 mb s3://mybucket


### Environment

```markdown
- OS: MacOS
- LocalStack: 0.14
```


### Anything else?

This example can be used to validate.
https://github.com/localstack/localstack-terraform-samples/tree/master/apigateway-lambda-velocity
if len(matches) > 1:
        
        for match in matches:
            if match[0] == path:
                return match
        
        for match in matches:
            if path_matches_pattern(path, match[0]):
                return match
        
        
        sorted_matches = sorted(matches, key=lambda x: len(x[0]), reverse=True)
        return sorted_matches[0]
    return matches[0]
def path_matches_pattern(path, api_path):
    api_paths = api_path.split("/")
    paths = path.split("/")
    reg_check = re.compile(r"{(.*)}")
    if len(api_paths) != len(paths):
        return False
    results = [
        part == paths[indx]
        for indx, part in enumerate(api_paths)
        if reg_check.match(part) is None and part
    ]
    return len(results) > 0 and all(results)
def connect_api_gateway_to_sqs(gateway_name, stage_name, queue_arn, path, region_name=None):