Platform Demo atagsche-demo Hello World Environment Vars

• CONFIGMAP_TEST: test_static_value
• CONFIGMAP_DEFAULT_EXAMPLE: default_value_foo
• CONFIGMAP_OVERLAY_EXAMPLE: default_value_bar
• APPLICATION_VERSION: 2024.05.14-6799890-1
• MOCK_DB_UPTIME: 99.9
• MOCK_FOO_UPTIME: 99.5