Add support for CloudWatch metrics in sumologic polling source

[vsinghal13]

Sample TF File:

provider "sumologic" {}

provider "aws" {}

resource "sumologic_collector" "collector" {
    name = "MyTFCollector"
}

locals {
  filters = [{
            "type" = "TagFilters"
            "namespace" = "All"
            "tags" = ["k3=v3"]
          },{
            "type" = "TagFilters"
            "namespace" = "AWS/Route53"
            "tags" = ["k1=v1"]
          },{
            "type" = "TagFilters"
            "namespace" = "AWS/S3"
            "tags" = ["k2=v2"]
          }]
}

resource "sumologic_polling_source" "terraform_cw_metrics" {
  name          = "Terraform CW Metrics"
  description   = "My description"
  category      = "aws/terraform_cw"
  content_type  = "AwsCloudWatch"
  scan_interval = 300000
  paused        = false
  collector_id  = "${sumologic_collector.collector.id}"

  authentication {
    type = "AWSRoleBasedAuthentication"
    role_arn = "xxxx"
  }

  path {
    type = "CloudWatchPath"
    limit_to_regions = ["us-west-2"]
    limit_to_namespaces = ["AWS/Route53","AWS/S3","customNamepace"]
  
    dynamic "tag_filters" {
    for_each = local.filters
    content{
      type = tag_filters.value.type
      namespace = tag_filters.value.namespace
      tags = tag_filters.value.tags
    }
    }  
  }
}

[lei-sumo]

@vsinghal13 This needs to be reviewed by a CloudWatch source SME, Maisie or Yuting.

[vsinghal13]

Unable to tag anyone as reviewers.

[maimaisie]

Are there some kind of validation we would lose in Terraform after making bucket_name and path_expression optional because now we have two path types?

[vsinghal13]

not that I know of

[yuting-liu]

lgtm

[seansain]

@vsinghal13 Have you manually tested everything?

[vsinghal13]

@vsinghal13 Have you manually tested everything?

Yes, and @sajain-sumologic will be verifying the same next week.