Stored procedures are not ingested into specified domain

[ttekampe]

Describe the bug
Stored procedures are not ingested into specified domain.

To Reproduce

1. you need a database with stored procedures
2. run a ingestion job that specifies the domain into which the data shall go
   example:

source:
  type: mssql
  config:
    host_port: 'localhost'
    database: MY_DATABASE
    username: MY_DATABASE_USER_NAME
    password: MY_DATABASE_USER_PASSWORD
    include_stored_procedures: true
    include_stored_procedures_code: true
    domain:
      'My Domain':
        allow:
          - '.*'

Expected behavior
All ingested objects should go under the 'My Domain' domain.
For tables and views this works nicely. Stored procedures however do not get a domain assigned

Additional context

• Datahub version 0.15.0
• CLI version 0.15.0.5