Add EC2-API support

Change-Id: I92a0fca191fbf59fa4409cc238e0a42c495daf4d

config_tempest/api_discovery.py

@@ -269,4 +269,5 @@ def discover(auth_provider, region, object_store_discovery=True,
         elif 'v3' not in ep[public_url]:  # is not v3 url
             services[name]['extensions'] = service.get_extensions()
         services[name]['versions'] = service.get_versions()
+    LOG.debug("Discovered services: %s", services)
     return services

config_tempest/config_tempest.py

@@ -95,6 +95,7 @@ SERVICE_NAMES = {
     'messaging': 'zaqar',
     'metric': 'gnocchi',
     'event': 'panko',
+    'ec2': 'ec2',
 }
 
 # what API versions could the service have and should be enabled/disabled
@@ -205,6 +206,8 @@ def main():
     configure_boto(conf, services)
     configure_keystone_feature_flags(conf, services)
     configure_horizon(conf)
+    if "ec2" in services:
+        configure_ec2api(conf, clients.users)
 
     # remove all unwanted values if were specified
     if args.remove != {}:
@@ -1002,6 +1005,28 @@ def configure_horizon(conf):
     conf.set('dashboard', 'login_url', base + '/auth/login/')
 
 
+def configure_ec2api(conf, clients):
+    """Create ec2 credentials and set configs."""
+    LOG.debug("Configuring EC2-API")
+    username = conf.get('identity', 'username')
+    tenant_name = conf.get('identity', 'tenant_name')
+    users = clients.users.list_users()
+    user_ids = [u['id'] for u in users['users'] if u['name'] == username]
+    user_id = user_ids[0]
+    tenant_id = clients.tenants.get_project_by_name(tenant_name)['id']
+    resp = users_client.create_user_ec2_credential(
+        user_id, tenant_id=tenant_id)['credential']
+    LOG.debug("Created EC2 credentials: %s", resp)
+    access = resp['access']
+    secret = resp['secret']
+    conf.set('aws', 'aws_access', access)
+    conf.set('aws', 'aws_secret', secret)
+    flavor_ref = conf.get('compute', 'flavor_ref')
+    flavor_ref_alt = conf.get('compute', 'flavor_ref_alt')
+    conf.set('aws', 'instance_type', flavor_ref)
+    conf.set('aws', 'instance_type_alt', flavor_ref_alt)
+
+
 def configure_discovered_services(conf, services):
     """Set service availability and supported extensions and versions.