Corrects the disconnected setting to use subscription_connection_enabled

[parthaa]

Katello/katello#9812 basically removed the content_disconnected setting that rh cloud was still using to determine if content was actually disconnected.

Step:

• add this to your /etc/hosts
0.0.0.0 cert-api.access.redhat.com cert.cloud.redhat.com cloud.redhat.com console.redhat.com
• Set subscription_connection_enabled to false
• Try generating and uploading report on inventory upload
  Before PR
• Notice rh cloud still tries to upload the generated report.

 Trying 0.0.0.0:443...

* Connected to cert.cloud.redhat.com (127.0.0.1) port 443 (#0)

* ALPN, offering h2

After PR

• Upload should get ignored.
  Upload was stopped since disconnected mode setting is enabled for content on this instance.