aws provider: normalize json of cloudwatch event_pattern

Normalise the event_pattern of the aws_cloudwatch_event_rule resource

before uploading it to AWS.



AWS seems to accept a event_pattern with a JSON with new lines, but then

the rule does not seem to work. Creating the rule in the AWS console works,

but will setup the pattern  as a json without newlines or spaces, and

display a formatted JSON.

builtin/providers/aws/resource_aws_cloudwatch_event_rule.go

@@ -213,7 +213,7 @@ func buildPutRuleInputStruct(d *schema.ResourceData) *events.PutRuleInput {
 		input.Description = aws.String(v.(string))
 	}
 	if v, ok := d.GetOk("event_pattern"); ok {
-		input.EventPattern = aws.String(v.(string))
+		input.EventPattern = aws.String(normalizeJson(v.(string)))
 	}
 	if v, ok := d.GetOk("role_arn"); ok {
 		input.RoleArn = aws.String(v.(string))