change hostname of mongodb in controller config

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

config/controller/qkdn-gosdn.toml

@@ -6,7 +6,7 @@ amqpuser = 'guest'
 basepnduuid = '5f20f34b-cbd0-4511-9ddc-c50cf6a3b49d'
 config = './configs/qkdn-gosdn.toml'
 csbi-orchestrator = 'localhost:55056'
-databaseconnection = 'mongodb://root:example@mongodb:27017'
+databaseconnection = 'mongodb://root:example@mongo:27017'
 defaultjwtduration = 24
 filesystempathtostores = 'stores'
 gnmisubscriptionspath = 'configs/gNMISubscriptions.txt'