[yocto] QA cycle report for 2.5 M4 RC1

[Yeoh, Ee Peng]

This is the full report for 2.5 M4 RC1:  
https://wiki.yoctoproject.org/wiki/WW19_-_2018-05-10-_Full_Test_Cycle_-_2.5_M4_rc1

======= Summary ========

The QA cycle for release 2.5 M4 RC1 was completed.  Team had discovered 2 new bugs.

1.	eSDK toolchain were configured with SSTATE_MIRRORS but "devtool sdk-install libxml2" failed [1].  
2.	oe-selftest failed at runtime_test.TestImage.test_testimage_dnf [2]. 


For high & medium+ bugs identified during 2.5 M3 RC1, all 3 high bugs (12647, 12665, 12655) and 2 medium+ bugs (12633 & 12641) were resolved/verified.  

======= QA-Hints========

No significant bugs were discovered. 

======= New Bugs ========

[1] Bug 12725 - devtool sdk-install unable to add component for libxml2
https://bugzilla.yoctoproject.org/show_bug.cgi?id=12725

[2] Bug 12736 - 2.5 rc1: CentOS 7 oe-selftest fail at runtime_test.TestImage.test_testimage_dnf
https://bugzilla.yoctoproject.org/show_bug.cgi?id=12736

Regards
Ee Peng