[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/tools/aws_config_quick_start/certs.py

@@ -0,0 +1,88 @@
+#!/usr/bin/env python
+
+import boto3
+import json
+
+
+class Certificate():
+
+    def __init__(self, certId=''):
+        self.id = certId
+        self.arn = ''
+        self.client = boto3.client('iot')
+        if (self.id != ''):
+            result = self.client.describe_certificate(certificateId=self.id)
+            self.arn = result['certificateDescription']['certificateArn']
+
+    def create(self):
+        assert not self.exists(), "Cert already exists"
+        cert = self.create_keys_and_certificate()
+        self.id = cert["certificateId"]
+        self.arn = cert["certificateArn"]
+        return cert
+
+    def create_keys_and_certificate(self):
+        result = self.client.create_keys_and_certificate(setAsActive=True)
+        return result
+
+    def delete(self):
+        cert_not_found = True
+        # Detach Policies attached to the cert
+        policies_attached = self.list_policies()
+        for policy in policies_attached:
+            self.detach_policy(policy['policyName'])
+
+        # Detach Things attached to the cert
+        things_attached = self.list_things()
+        for thing in things_attached:
+            self.detach_thing(thing)
+
+        # Update the status of the certificate to INACTIVE
+        try:
+            self.client.update_certificate(certificateId=self.id,
+                                           newStatus='INACTIVE')
+            cert_not_found = False
+        except self.client.exceptions.ResourceNotFoundException:
+            cert_not_found = True
+            return cert_not_found
+
+        # Delete the certificate
+        try:
+            self.client.delete_certificate(certificateId=self.id)
+            cert_not_found = False
+        except self.client.exceptions.ResourceNotFoundException:
+            cert_not_found = True
+        return cert_not_found
+
+    def exists(self):
+        if self.id == '':
+            return False
+        else:
+            return True
+
+    def get_arn(self):
+        return self.arn
+
+    def list_policies(self):
+        policies = self.client.list_principal_policies(principal=self.arn)
+        policies = policies['policies']
+        return policies
+
+    def attach_policy(self, policy_name):
+        self.client.attach_policy(policyName=policy_name, target=self.arn)
+
+    def detach_policy(self, policy_name):
+        self.client.detach_policy(policyName=policy_name, target=self.arn)
+
+    def list_things(self):
+        things = self.client.list_principal_things(principal=self.arn)
+        things = things['things']
+        return things
+
+    def attach_thing(self, thing_name):
+        self.client.attach_thing_principal(thingName=thing_name,
+                                           principal=self.arn)
+
+    def detach_thing(self, thing_name):
+        self.client.detach_thing_principal(thingName=thing_name,
+                                           principal=self.arn)