When the new SDK is downloaded and installed, it only installs SDK Platform but not "ARM EABI v7a System Image".

That's why I see this error in the run:

[android] Using Android SDK: /tmp/jenkins/tools/android-sdk
14:10:38 [android] Setting hardware properties:
14:10:38 disk.cachePartition.size: 768M
14:10:38 $ /tmp/jenkins/tools/android-sdk/platform-tools/adb start-server
14:10:38 [android] Starting Android emulator
14:10:38 $ /tmp/jenkins/tools/android-sdk/tools/emulator -no-boot-anim -ports 53709,53710 -prop persist.sys.language=en -prop persist.sys.country=US -avd hudson_en-US_160_WXGA800_android-15 -no-snapshot-load -no-snapshot-save -partition-size 768
14:10:39 emulator: ERROR: This AVD's configuration is missing a kernel file!!

The workaround is to download and install "ARM EABI v7a System Image" and re-kick off the Emulator run.