Add validator for ee image field name

awxkit default ee image name is now a fixed valid (but bogus) name, rather than random unicode

awx/main/migrations/0147_validate_ee_image_field.py

@@ -0,0 +1,24 @@
+# Generated by Django 2.2.16 on 2021-06-15 02:49
+
+import awx.main.validators
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('main', '0146_add_insights_inventory'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='executionenvironment',
+            name='image',
+            field=models.CharField(
+                help_text='The full image location, including the container registry, image name, and version tag.',
+                max_length=1024,
+                validators=[awx.main.validators.validate_container_image_name],
+                verbose_name='image location',
+            ),
+        ),
+    ]