Create default EE in seperate awx-managment cmd

Create EE at a seperate time and also attach a registry credential if
auth information provided

This command can be run multiple times on the same instance and should be
idempotent.

awx/main/management/commands/register_default_execution_environments.py

@@ -0,0 +1,89 @@
+# Copyright (c) 2015 Ansible, Inc.
+# All Rights Reserved
+import sys
+
+from django.core.management.base import BaseCommand
+from django.conf import settings
+from awx.main.models import CredentialType, Credential, ExecutionEnvironment
+
+
+class Command(BaseCommand):
+    """Create default execution environments, intended for new installs"""
+
+    help = """
+    Creates or updates the execution environments set in settings.DEFAULT_EXECUTION_ENVIRONMENTS if they are not yet created.
+    Optionally provide authentication details to create or update a container registry credential that will be set on all of these default execution environments.
+    Note that settings.DEFAULT_EXECUTION_ENVIRONMENTS is and ordered list, the first in the list will be used for project updates and system jobs.
+    """
+
+    def add_arguments(self, parser):
+        parser.add_argument(
+            "--registry-url",
+            type=str,
+            default="",
+            help="URL for the container registry",
+        )
+        parser.add_argument(
+            "--registry-username",
+            type=str,
+            default="",
+            help="username for the container registry",
+        )
+        parser.add_argument(
+            "--registry-password",
+            type=str,
+            default="",
+            help="Password or token for CLI authentication with the container registry",
+        )
+        parser.add_argument(
+            "--verify-ssl",
+            type=bool,
+            default=True,
+            help="Verify SSL when authenticating with the container registry",
+        )
+
+    def handle(self, *args, **options):
+        changed = False
+        registry_cred = None
+
+        if options.get("registry_username"):
+            if not options.get("registry_password"):
+                sys.stderr.write("Registry password must be provided when providing registry username\n")
+                sys.exit(1)
+            if not options.get("registry_url"):
+                sys.stderr.write("Registry url must be provided when providing registry username\n")
+                sys.exit(1)
+            registry_cred_type = CredentialType.objects.filter(kind="registry")
+            if not registry_cred_type.exists():
+                sys.stderr.write("No registry credential type found")
+                sys.exit(1)
+            registry_cred, created = Credential.objects.update_or_create(
+                name="Default Execution Environment Registry Credential",
+                managed_by_tower=True,
+                credential_type=registry_cred_type[0],
+                defaults={
+                    "inputs": {
+                        "host": options.get("registry_url"),
+                        "password": options.get("registry_password"),
+                        "username": options.get("registry_username"),
+                        "verify_ssl": options.get("verify_ssl"),
+                    },
+                },
+            )
+            if created:
+                changed = True
+                print("Default Execution Environment Credential registered.")
+
+        for ee in reversed(settings.DEFAULT_EXECUTION_ENVIRONMENTS):
+            _, created = ExecutionEnvironment.objects.update_or_create(
+                name=ee["name"], defaults={"image": ee["image"], "managed_by_tower": True, "credential": registry_cred}
+            )
+
+        if created:
+            changed = True
+            print("Default Execution Environment(s) registered.")
+
+        if changed:
+            print("(changed: True)")
+        else:
+            print("(changed: False)")