E3012 documentation changes for more clarity (#2747)

* documentation changes for clarity

Author: drmmarsunited

README.md

@@ -186,7 +186,7 @@ Optional parameters:
 | -c, --include-checks | | INCLUDE_CHECKS [INCLUDE_CHECKS ...] | Include rules whose id match these values
 | -m, --mandatory-checks | | | Rules to check regardless of ignore configuration |
 | --non-zero-exit-code | | informational (default), warning, error, none] | Exit code will be non zero from the specified rule class and higher |
-| -x,  --configure-rule | | CONFIGURE_RULES [CONFIGURE_RULES ...] | Provide configuration for a rule. Format RuleId:key=value. Example: E3012:strict=false
+| -x,  --configure-rule | | CONFIGURE_RULES [CONFIGURE_RULES ...] | Provide configuration for a rule. Format RuleId:key=value. Example: E3012:strict=true
 | -D, --debug |  |  | Specify to enable debug logging. Debug logging outputs detailed information about rules processing, useful for debugging rules. |
 | -I, --info |  |  | Specify to enable logging. Outputs additional information about the template processing. |
 | -u, --update-specs | | | Update the [CloudFormation Resource Specifications](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-resource-specification.html).  You may need sudo to run this.  You will need internet access when running this command |
@@ -243,7 +243,7 @@ cfn-lint applies configurations from several sources. The rules at lower levels
 
 Certain rules support configuration properties. You can configure these rules by using `configure_rules` parameter.
 
-From the command line the format is `RuleId:key=value`, for example: `E3012:strict=false`.
+From the command line the format is `RuleId:key=value`, for example: `E3012:strict=true`.
 From the cfnlintrc or Metadata section the format is
 
 ```yaml

docs/cfn-resource-specification.md

@@ -10,7 +10,7 @@ There are multiple rules that are based on information from the specification fi
 The Required rule ([`E3003`](/docs/rules.md#E3003)) checks if properties that are marked as required in the [property specifications](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-resource-specification-format.html#cfn-resource-specification-format-propertytypes) are specified.
 
 ### ValuePrimitiveType
-The ValuePrimitiveType rule ([`E3012`](/docs/rules.md#E3012)) checks if the value of a property is of the same type as specified in the [property specifications](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-resource-specification-format.html#cfn-resource-specification-format-propertytypes) thus enforcing strict typing of CloudFormation templates. In short this means a number is a number, string is a string, etc.  
+The ValuePrimitiveType rule ([`E3012`](/docs/rules.md#E3012)) checks if the value of a property is of the same type as specified in the [property specifications](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-resource-specification-format.html#cfn-resource-specification-format-propertytypes) thus enforcing strict typing of CloudFormation templates. In short this means a number is a number, string is a string, etc. By default, strict typing is **NOT** enforced. 
 
 Although there are situations in which a warning would be sufficient (Python/YAML does implicit conversions) this could also result in errors (More information in issues [42](https://github.com/aws-cloudformation/cfn-python-lint/issues/42) and [180](https://github.com/aws-cloudformation/cfn-python-lint/issues/180)). Since the Specification contains a mapping to the underlying API's this is out of control of cfn-lint. cfn-lint doesn't have an exception process so all instances of this issue are considered errors.
 

docs/rules.md

@@ -27,7 +27,7 @@ Informational results start with the letter `I`. Informational alert you when th
 | (E|W|I)9xxx | Reserved for users rules |
 
 *Warning*
-Rule `E3012` is used to check the types for value of a resource property. A number is a number, string is a string, etc.  There are occasions where this could be just a warning and other times it could be an error. cfn-lint doesn't have an exception process so all instances of this issue are considered errors. You can disable this rule using `--ignore-checks` if it is not required for your internal best practices.
+Rule `E3012` is used to check the types for value of a resource property. A number is a number, string is a string, etc.  There are occasions where this could be just a warning and other times it could be an error. cfn-lint doesn't have an exception process so all instances of this issue are considered errors. You can disable this rule using `--ignore-checks` if it is not required for your internal best practices. Conversely, strict typing is **NOT** enforced by default for this rule, so if strict adherence to resource value types is necessary for your use case, you can use `--configure-rule E3012:strict=true` to enforce the rule.
 
 ## Experimental rules
 Sometimes there are (new) rules that might be complex, that doesn't have enough solid test templates and examples and/or might have unexpected results. We support adding in these rules so they can be tested, tweaked and improved before they become generally available.

src/cfnlint/config.py

@@ -340,7 +340,7 @@ def __call__(self, parser, namespace, values, option_string=None):
         usage = (
             "\nBasic: cfn-lint test.yaml\n"
             "Ignore a rule: cfn-lint -i E3012 -- test.yaml\n"
-            "Configure a rule: cfn-lint -x E3012:strict=false -t test.yaml\n"
+            "Configure a rule: cfn-lint -x E3012:strict=true -t test.yaml\n"
             "Lint all yaml files in a folder: cfn-lint dir/**/*.yaml"
         )
 
@@ -465,7 +465,7 @@ def __call__(self, parser, namespace, values, option_string=None):
             nargs="+",
             default={},
             action=RuleConfigurationAction,
-            help="Provide configuration for a rule. Format RuleId:key=value. Example: E3012:strict=false",
+            help="Provide configuration for a rule. Format RuleId:key=value. Example: E3012:strict=true",
         )
         standard.add_argument(
             "--config-file",

src/cfnlint/rules/resources/properties/ValuePrimitiveType.py

@@ -25,7 +25,9 @@ def __init__(self):
         super().__init__()
         self.resource_specs = []
         self.property_specs = []
-        self.config_definition = {"strict": {"default": False, "type": "boolean"}}
+        self.config_definition = {
+            "strict": {"default": False, "type": "boolean"}
+        }  # Strict mode is set to false by default
         self.configure()
 
     def initialize(self, cfn):