DNS response code 7 means lookup failed to return an IP address

[TiborBeres]

Fixes #31200

[TiborBeres]

!build
(view Open Liberty Personal Build - ❌ completed with errors/failures.)
spawn.fullfat.buckets=com.ibm.ws.sipcontainer_fat,com.ibm.ws.sipcontainer_fat_1,com.ibm.ws.sipcontainer_fat_2,com.ibm.ws.sipcontainer_fat_3,com.ibm.ws.sipcontainer_fat_4,com.ibm.ws.sipcontainer_fat_5,com.ibm.ws.sipcontainer_fat_6,com.ibm.ws.sipcontainer_fat_7

Note: Target locations of links might be accessible only to IBM employees.

[LibbyBot]

Code analysis and actions

DO NOT DELETE THIS COMMENT.

• 4 product code files were changed.
• Please describe in a separate comment how you tested your changes.

[TiborBeres]

!build
(view Open Liberty Personal Build - ❌ completed with errors/failures.)
spawn.fullfat.buckets=com.ibm.ws.sipcontainer_fat_7

Note: Target locations of links might be accessible only to IBM employees.

[LibbyBot]

Code analysis and actions

DO NOT DELETE THIS COMMENT.

• 4 product code files were changed.
• Please describe in a separate comment how you tested your changes.

[TiborBeres]

Only known intermittent failures seen in the personal build, not related to DNS lookups