Add additional resources as-per README instructions

Author: marckysharky

docs/rules/aws_resource_invalid_tags.md

@@ -0,0 +1,46 @@
+# aws_resource_invalid_tags
+
+Require tags to be assigned to a specific set of values.
+
+## Example
+
+```hcl
+rule "aws_resource_invalid_tags" {
+    enabled = true
+    tags    = {
+        Department  = ["finance", "hr", "payments", "engineering"]
+        Environment = ["sandbox", "staging", "production"]
+    }
+    exclude = ["aws_autoscaling_group"]
+}
+
+provider "aws" {
+    ...
+    default_tags {
+        tags = { Environment = "sandbox" }
+    }
+}
+
+resource "aws_s3_bucket" "bucket" {
+    ...
+    tags = { Project: "homepage", Department = "science" }
+}
+```
+
+```
+$ tflint
+1 issue(s) found:
+
+Notice: aws_s3_bucket.bucket Received 'science' for tag 'Department', expected one of 'finance,hr,payments,engineering'.
+
+  on test.tf line 3:
+   3:   tags = { Project: "homepage", Department = "science" }
+```
+
+## Why
+
+Enforce standard tag values across all resources.
+
+## How To Fix
+
+Align the provider, resource or autoscaling group tags to the configured expectation.

rules/provider.go

@@ -39,6 +39,7 @@ var manualRules = []tflint.Rule{
 	NewAwsElasticBeanstalkEnvironmentInvalidNameFormatRule(),
 	NewAwsSecurityGroupInvalidProtocolRule(),
 	NewAwsSecurityGroupRuleInvalidProtocolRule(),
+	NewAwsResourceInvalidTagsRule(),
 }
 
 // Rules is a list of all rules