Add column, free_sms_fragment_limit, to services & services_history

- Created new column in both tables
- Modified model and Service schema
- Modifed existing test

app/models.py

@@ -211,6 +211,7 @@ class Service(db.Model, Versioned):
     _letter_contact_block = db.Column('letter_contact_block', db.Text, index=False, unique=False, nullable=True)
     sms_sender = db.Column(db.String(11), nullable=False, default=lambda: current_app.config['FROM_NUMBER'])
     organisation_id = db.Column(UUID(as_uuid=True), db.ForeignKey('organisation.id'), index=True, nullable=True)
+    free_sms_fragment_limit = db.Column(db.BigInteger, index=False, unique=False, nullable=True)
     organisation = db.relationship('Organisation')
     dvla_organisation_id = db.Column(
         db.String,
@@ -230,10 +231,6 @@ class Service(db.Model, Versioned):
 
     association_proxy('permissions', 'service_permission_types')
 
-    @staticmethod
-    def free_sms_fragment_limit():
-        return current_app.config['FREE_SMS_TIER_FRAGMENT_COUNT']
-
     @classmethod
     def from_json(cls, data):
         """

app/schemas.py

@@ -175,20 +175,17 @@ class ProviderDetailsHistorySchema(BaseSchema):
 
 class ServiceSchema(BaseSchema):
 
-    free_sms_fragment_limit = fields.Method(method_name='get_free_sms_fragment_limit')
     created_by = field_for(models.Service, 'created_by', required=True)
     organisation = field_for(models.Service, 'organisation')
     branding = field_for(models.Service, 'branding')
     dvla_organisation = field_for(models.Service, 'dvla_organisation')
+    free_sms_fragment_limit = field_for(models.Service, 'free_sms_fragment_limit')
     permissions = fields.Method("service_permissions")
     override_flag = False
     reply_to_email_address = fields.Method(method_name="get_reply_to_email_address")
     sms_sender = fields.Method(method_name="get_sms_sender")
     letter_contact_block = fields.Method(method_name="get_letter_contact")
 
-    def get_free_sms_fragment_limit(selfs, service):
-        return service.free_sms_fragment_limit()
-
     def service_permissions(self, service):
         return [p.permission for p in service.permissions]
 
@@ -203,7 +200,7 @@ class ServiceSchema(BaseSchema):
 
     class Meta:
         model = models.Service
-        dump_only = ['free_sms_fragment_limit', 'reply_to_email_address', 'letter_contact_block']
+        dump_only = ['reply_to_email_address', 'letter_contact_block']
         exclude = (
             'updated_at',
             'created_at',
@@ -252,11 +249,6 @@ class ServiceSchema(BaseSchema):
 class DetailedServiceSchema(BaseSchema):
     statistics = fields.Dict()
 
-    free_sms_fragment_limit = fields.Method(method_name='get_free_sms_fragment_limit')
-
-    def get_free_sms_fragment_limit(selfs, service):
-        return service.free_sms_fragment_limit()
-
     class Meta:
         model = models.Service
         exclude = (