Fixes a bug where the CLIN type was not displaying correctly for saved

TOs.

The enum for the CLIN type needs to be coerced in the form data so that
the `jedi_clin_field` data is the value of the enum option. Perviously
the `jedi_clin_field` was being populated with a stringified
representation of the enum, like `JEDICLINType.JEDI_CLIN_1`.

tests/forms/test_task_order.py

@@ -0,0 +1,11 @@
+from atst.forms.task_order import CLINForm
+from atst.models import JEDICLINType
+
+import tests.factories as factories
+
+
+def test_clin_form_jedi_clin_type():
+    jedi_type = JEDICLINType.JEDI_CLIN_2
+    clin = factories.CLINFactory.create(jedi_clin_type=jedi_type)
+    clin_form = CLINForm(obj=clin)
+    assert clin_form.jedi_clin_type.data == jedi_type.value