Move preinstalled workflows to mistral-extra

* These workflows are openstack workflow so they should be
  in mistral-extra where all the openstack actions are.

* Use an entry point to get all the paths for the workflows.py,
  This way other projects can have there own pre installed workflows.

Depends-On: https://review.opendev.org/#/c/709963/
Change-Id: I379dc5ca40c2055122508daae7a638c21c840254

mistral_extra/resources/openstack/workflows/create_instance.yaml

@@ -0,0 +1,88 @@
+---
+version: '2.0'
+
+create_instance:
+  type: direct
+
+  description: |
+    Creates VM and waits till VM OS is up and running.
+
+  input:
+    - name
+    - image_id
+    - flavor_id
+    - ssh_username: null
+    - ssh_password: null
+
+    # Name of previously created keypair to inject into the instance.
+    # Either ssh credentials or keypair must be provided.
+    - key_name: null
+
+    # Security_groups: A list of security group names
+    - security_groups: null
+
+    # An ordered list of nics to be added to this server, with information about connected networks, fixed IPs, port etc.
+    # Example: nics: [{"net-id": "27aa8c1c-d6b8-4474-b7f7-6cdcf63ac856"}]
+    - nics: null
+
+  task-defaults:
+    on-error:
+      - delete_vm
+
+  output:
+    ip: <% $.vm_ip %>
+    id: <% $.vm_id %>
+    name: <% $.name %>
+    status: <% $.status %>
+
+  tasks:
+    create_vm:
+      description: Initial request to create a VM.
+      action: nova.servers_create name=<% $.name %> image=<% $.image_id %> flavor=<% $.flavor_id %>
+      input:
+        key_name: <% $.key_name %>
+        security_groups: <% $.security_groups %>
+        nics: <% $.nics %>
+      publish:
+        vm_id: <% task(create_vm).result.id %>
+      on-success:
+        - search_for_ip
+
+    search_for_ip:
+      description: Gets first free ip from Nova floating IPs.
+      action: nova.floating_ips_findall instance_id=null
+      publish:
+        vm_ip: <% task(search_for_ip).result[0].ip %>
+      on-success:
+        - wait_vm_active
+
+    wait_vm_active:
+      description: Waits till VM is ACTIVE.
+      action: nova.servers_find id=<% $.vm_id %> status="ACTIVE"
+      retry:
+        count: 10
+        delay: 10
+      publish:
+        status: <% task(wait_vm_active).result.status %>
+      on-success:
+        - associate_ip
+
+    associate_ip:
+      description: Associate server with one of floating IPs.
+      action: nova.servers_add_floating_ip server=<% $.vm_id %> address=<% $.vm_ip %>
+      wait-after: 5
+      on-success:
+        - wait_ssh
+
+    wait_ssh:
+      description: Wait till operating system on the VM is up (SSH command).
+      action: std.wait_ssh username=<% $.ssh_username %> password=<% $.ssh_password %> host=<% $.vm_ip %>
+      retry:
+        count: 10
+        delay: 10
+
+    delete_vm:
+      description: Destroy VM.
+      workflow: delete_instance instance_id=<% $.vm_id %>
+      on-complete:
+        - fail

mistral_extra/resources/openstack/workflows/delete_instance.yaml

@@ -0,0 +1,25 @@
+---
+version: "2.0"
+
+delete_instance:
+  type: direct
+
+  input:
+    - instance_id
+
+  description: Deletes VM.
+
+  tasks:
+    delete_vm:
+      description: Destroy VM.
+      action: nova.servers_delete server=<% $.instance_id %>
+      wait-after: 10
+      on-success:
+        - find_given_vm
+
+    find_given_vm:
+      description: Checks that VM is already deleted.
+      action: nova.servers_find id=<% $.instance_id %>
+      on-error:
+        - succeed
+

mistral_extra/workflows.py

@@ -0,0 +1,21 @@
+#  Copyright 2020 - Nokia Corporation
+#
+#  Licensed under the Apache License, Version 2.0 (the "License"); you may
+#  not use this file except in compliance with the License. You may obtain
+#  a copy of the License at
+#
+#  http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#  License for the specific language governing permissions and limitations
+#  under the License.
+
+from mistral_lib import utils
+
+PRE_INSTALLED_WF_PATH = 'resources/openstack/workflows'
+
+
+def get_preinstalled_workflows():
+    return utils.get_file_list(PRE_INSTALLED_WF_PATH, package='mistral_extra')

setup.cfg

@@ -26,6 +26,9 @@ packages =
 mistral.generators =
     generators = mistral_extra.actions.generator_factory:all_generators
 
+mistral.preinstalled_workflows =
+    workflows = mistral_extra.workflows:get_preinstalled_workflows
+
 [build_sphinx]
 source-dir = doc/source
 build-dir = doc/build