[Jenkins][ci skip] Add [ci emptytest] command
closed #4847, Find ant path from system first when ANT_ROOT is not set.
[Jenkins][ci skip] Fix ftp home in upload_apk.sh
[Jenkins][ci skip] Fix ftp home in upload_apk.sh
Merge pull request #6294 from lmskater/fix-ftp-home

[Jenkins][ci skip] Fix ftp home in upload_apk.sh
[Jenkins][ci skip] Fix 'localfile' parameter
Merge pull request #6293 from natural-law/issue4847

Find ant path from system first when ANT_ROOT is not set.
Merge pull request #6296 from lmskater/fix-ftp-home

[Jenkins][ci skip] Fix 'localfile' parameter
Merge pull request #6292 from lmskater/add-emptytest-command

[Jenkins][ci skip] Add [ci emptytest] command