add multi-delete support for identity

This is part2. Add support for these objects:
identity.project(v2.0)
identity.role(v2.0)
identity.user(v2.0)
identity.project(v3)
identity.role(v3)
identity.user(v3)
identity.group(v3)

Closes-Bug: #1400597
Change-Id: I270434d657cf4ddc23c3aba2c704d6ef184b0dbc

3 files changed, 30 insertions, 27 deletions

diff --git a/openstackclient/identity/v2_0/project.py b/openstackclient/identity/v2_0/project.py
index 6450d814..9b195600 100644
--- a/openstackclient/identity/v2_0/project.py
+++ b/openstackclient/identity/v2_0/project.py
@@ -104,16 +104,17 @@ class CreateProject(show.ShowOne):
 
 
 class DeleteProject(command.Command):
-    """Delete an existing project"""
+    """Delete project(s)"""
 
     log = logging.getLogger(__name__ + '.DeleteProject')
 
     def get_parser(self, prog_name):
         parser = super(DeleteProject, self).get_parser(prog_name)
         parser.add_argument(
-            'project',
+            'projects',
             metavar='<project>',
-            help=_('Project to delete (name or ID)'),
+            nargs="+",
+            help=_('Project(s) to delete (name or ID)'),
         )
         return parser
 
@@ -121,12 +122,12 @@ class DeleteProject(command.Command):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
 
-        project = utils.find_resource(
-            identity_client.tenants,
-            parsed_args.project,
-        )
-
-        identity_client.tenants.delete(project.id)
+        for project in parsed_args.projects:
+            project_obj = utils.find_resource(
+                identity_client.tenants,
+                project,
+            )
+            identity_client.tenants.delete(project_obj.id)
         return
 
 
diff --git a/openstackclient/identity/v2_0/role.py b/openstackclient/identity/v2_0/role.py
index 475baa2c..d03664e0 100644
--- a/openstackclient/identity/v2_0/role.py
+++ b/openstackclient/identity/v2_0/role.py
@@ -114,16 +114,17 @@ class CreateRole(show.ShowOne):
 
 
 class DeleteRole(command.Command):
-    """Delete an existing role"""
+    """Delete role(s)"""
 
     log = logging.getLogger(__name__ + '.DeleteRole')
 
     def get_parser(self, prog_name):
         parser = super(DeleteRole, self).get_parser(prog_name)
         parser.add_argument(
-            'role',
+            'roles',
             metavar='<role>',
-            help=_('Role to delete (name or ID)'),
+            nargs="+",
+            help=_('Role(s) to delete (name or ID)'),
         )
         return parser
 
@@ -131,12 +132,12 @@ class DeleteRole(command.Command):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
 
-        role = utils.find_resource(
-            identity_client.roles,
-            parsed_args.role,
-        )
-
-        identity_client.roles.delete(role.id)
+        for role in parsed_args.roles:
+            role_obj = utils.find_resource(
+                identity_client.roles,
+                role,
+            )
+            identity_client.roles.delete(role_obj.id)
         return
 
 
diff --git a/openstackclient/identity/v2_0/user.py b/openstackclient/identity/v2_0/user.py
index 7f1ea6da..b5bbce3b 100644
--- a/openstackclient/identity/v2_0/user.py
+++ b/openstackclient/identity/v2_0/user.py
@@ -128,16 +128,17 @@ class CreateUser(show.ShowOne):
 
 
 class DeleteUser(command.Command):
-    """Delete user"""
+    """Delete user(s)"""
 
     log = logging.getLogger(__name__ + '.DeleteUser')
 
     def get_parser(self, prog_name):
         parser = super(DeleteUser, self).get_parser(prog_name)
         parser.add_argument(
-            'user',
+            'users',
             metavar='<user>',
-            help=_('User to delete (name or ID)'),
+            nargs="+",
+            help=_('User(s) to delete (name or ID)'),
         )
         return parser
 
@@ -145,12 +146,12 @@ class DeleteUser(command.Command):
         self.log.debug('take_action(%s)', parsed_args)
         identity_client = self.app.client_manager.identity
 
-        user = utils.find_resource(
-            identity_client.users,
-            parsed_args.user,
-        )
-
-        identity_client.users.delete(user.id)
+        for user in parsed_args.users:
+            user_obj = utils.find_resource(
+                identity_client.users,
+                user,
+            )
+            identity_client.users.delete(user_obj.id)
         return