This results in a warning ‘[WARNING]: Found variable using reserved name: q’
If I change the variable in the included file to ‘varwithanr’ no warning is printed.
Yep, but until the backports that were created today it was only fixed for devel, not for stable-2.18 or stable-2.17. Now backports exist and the next 2.17.x and 2.18.x releases should not have this (anymore).
PLAY [Configure Zimbra Node(s)] ****************************************************************************************************************
[WARNING]: Found variable using reserved name ‘serial’.
Origin:
serial
[WARNING]: Found variable using reserved name ‘tags’.
Origin:
This is unrelated. Warnings about reserved names has been enabled for quite some time, the original message was a bug that would mark any variable with a q as reserved, your message is about a specific variable name.