Add Ssm Client (#489)

* Add SSM client

* Improve Generation docuementation

* Add metods to SSM

* Fix pagination without result

* Add tests

* Add entry in AwsPackagesProvider

* Add entry in AwsClientFactory

* Fix CS

* Removed useless entry in contrib

* Bump SSM test requirements

Author: jderusse

src/AwsClientFactory.php

@@ -21,6 +21,7 @@
 use AsyncAws\Ses\SesClient;
 use AsyncAws\Sns\SnsClient;
 use AsyncAws\Sqs\SqsClient;
+use AsyncAws\Ssm\SsmClient;
 use Psr\Log\LoggerInterface;
 use Psr\Log\NullLogger;
 use Symfony\Component\HttpClient\HttpClient;
@@ -158,27 +159,40 @@ public function sns(): SnsClient
         return $this->serviceCache[__METHOD__];
     }
 
-    public function sts(): StsClient
+    public function sqs(): SqsClient
     {
-        if (!class_exists(StsClient::class)) {
-            throw MissingDependency::create('async-aws/core', 'STS');
+        if (!class_exists(SqsClient::class)) {
+            throw MissingDependency::create('async-aws/sqs', 'SQS');
         }
 
         if (!isset($this->serviceCache[__METHOD__])) {
-            $this->serviceCache[__METHOD__] = new StsClient($this->configuration, $this->credentialProvider, $this->httpClient, $this->logger);
+            $this->serviceCache[__METHOD__] = new SqsClient($this->configuration, $this->credentialProvider, $this->httpClient, $this->logger);
         }
 
         return $this->serviceCache[__METHOD__];
     }
 
-    public function sqs(): SqsClient
+    public function ssm(): SsmClient
     {
-        if (!class_exists(SqsClient::class)) {
-            throw MissingDependency::create('async-aws/sqs', 'SQS');
+        if (!class_exists(SsmClient::class)) {
+            throw MissingDependency::create('async-aws/ssm', 'SSM');
         }
 
         if (!isset($this->serviceCache[__METHOD__])) {
-            $this->serviceCache[__METHOD__] = new SqsClient($this->configuration, $this->credentialProvider, $this->httpClient, $this->logger);
+            $this->serviceCache[__METHOD__] = new SsmClient($this->configuration, $this->credentialProvider, $this->httpClient, $this->logger);
+        }
+
+        return $this->serviceCache[__METHOD__];
+    }
+
+    public function sts(): StsClient
+    {
+        if (!class_exists(StsClient::class)) {
+            throw MissingDependency::create('async-aws/core', 'STS');
+        }
+
+        if (!isset($this->serviceCache[__METHOD__])) {
+            $this->serviceCache[__METHOD__] = new StsClient($this->configuration, $this->credentialProvider, $this->httpClient, $this->logger);
         }
 
         return $this->serviceCache[__METHOD__];