CLOUDSTACK-5443: Fixed the issue.
fixed build_asf.sh so that the xapi version is not affected
Updating pom.xml version numbers for release 4.2.1

Signed-off-by: Abhinandan Prateek <aprateek@apache.org>
Revert "Updating pom.xml version numbers for release 4.2.1"

This reverts commit cc662445a52285d65607831cddb7b95e9f058b05.
CLOUDSTACK-5481: fix ui bug when regular user add isolated network
CLOUDSTACK-5506: Fixed egress_fw_rules.py, one of hunks was missing.
Revert "fixed build_asf.sh so that the xapi version is not affected"

This reverts commit 2b34dc509aa7a2400ad7db8cae31feb656042119.
Updating pom.xml version numbers for release 4.2.1

Signed-off-by: Abhinandan Prateek <aprateek@apache.org>