After Android API 24, they introduced network security config to trust custom CA, it is obvious add such config into AndroidManifest.xml.
According to Android developer guide in the below link, there is additional steps to trust those user CAs by adding res/xml/network_security_config.xml
https://developer.android.com/training/articles/security-config
Now, the question is how to add this security configuration "network_security_config.xml" within MAF ?