Issue #3272557 by kumikoono, yas: Update the test scenario to test with two instance types

modules/cloud_service_providers/aws_cloud/tests/src/Behat/features/templates/AWS-ATDD-00-06-UserLaunchInstance.feature

@@ -33,6 +33,7 @@ Feature: Launch an EC2 instance as "Authenticated User"
     And I select "{{ instance_type }}" from "Instance type"
     And I wait for AJAX to finish
     And I select "{{ image_name }}" from "Image ID"
+    And I wait for AJAX to finish
     And I select "{{ availability_zone }}" from "Availability Zone"
     And I select "{{ vpc_name }}" from "VPC"
     And I wait for AJAX to finish

modules/cloud_service_providers/aws_cloud/tests/src/Behat/features/templates/AWS-ATDD-00-14-UserResourceInstances.feature

-@ignore
 Feature: Launch an EC2 instance with various instance types as "Authenticated User"
 
   @javascript @api
@@ -8,7 +7,9 @@ Feature: Launch an EC2 instance with various instance types as "Authenticated Us
     And I should see the heading "Add AWS Cloud"
     And I enter <instance_name> for "Name"
     And I select <instance_type> from "Instance type"
+    And I wait for AJAX to finish
     And I select "{{ image_name }}" from "Image ID"
+    And I wait for AJAX to finish
     And I select "{{ availability_zone }}" from "Availability Zone"
     And I select "{{ vpc_name }}" from "VPC"
     And I wait for AJAX to finish

modules/cloud_service_providers/aws_cloud/tests/src/Behat/features/templates/params/common.yml

@@ -35,12 +35,12 @@ instance_name_1:
 instance_name_2:
   BDD_Instance_2_@Random
 instance_type:
-  c3.large
+  t3.nano
 # instance_*_n for instance testing in a loop.
 instance_type_1:
-  c3.large
+  m5.large
 instance_type_2:
-  t3.nano
+  t3.micro
 internet_gateway:
   BDD_IG_@Random
 ip_protocol: