Update aws_lambda_permission for CloudWatch Events
Update aws_lambda_permission for CloudWatch Events

Based on support case with AWS, CloudWatch Events invoking Lambda should also specify the `source_arn`

Example, the resulting policy needs to be like:
```
{
    "Condition": {
        "ArnLike": {
            "AWS:SourceArn": "arn:aws:events:us-east-1:0123456789:rule/my-cloudwatch-events-rule"
        }
    },
    "Action": "lambda:InvokeFunction",
    "Resource": "arn:aws:lambda:us-east-1:0123456789:function:my-lambda-function",
    "Effect": "Allow",
    "Principal": {
        "Service": "events.amazonaws.com"
    },
    "Sid": "AllowMyCloudWatchEventRuleToCallMyLambda"
}
```
ashinohara/terraform-provider-aws,Ninir/terraform-provider-aws,nbaztec/terraform-provider-aws,nbaztec/terraform-provider-aws,ClementCunin/terraform-provider-aws,ClementCunin/terraform-provider-aws,Ninir/terraform-provider-aws,terraform-providers/terraform-provider-aws,nbaztec/terraform-provider-aws,ClementCunin/terraform-provider-aws,terraform-providers/terraform-provider-aws,nbaztec/terraform-provider-aws,kjmkznr/terraform-provider-aws,Ninir/terraform-provider-aws,terraform-providers/terraform-provider-aws,ashinohara/terraform-provider-aws,ashinohara/terraform-provider-aws,charles-at-geospock/terraform-provider-aws,kjmkznr/terraform-provider-aws,charles-at-geospock/terraform-provider-aws,kjmkznr/terraform-provider-aws,ashinohara/terraform-provider-aws,terraform-providers/terraform-provider-aws,charles-at-geospock/terraform-provider-aws,ClementCunin/terraform-provider-aws,Ninir/terraform-provider-aws,charles-at-geospock/terraform-provider-aws,kjmkznr/terraform-provider-aws