Bug 1013322

Description of problem:
After creating a JbossEAP-6.0 app, found it was using /etc/alternatives/java_sdk_1.6.0 as its default JAVA_HOME, which should be /etc/alternatives/java_sdk_1.7.0 due to the marker "java7" is existed once the app is created.

Version-Release number of selected component (if applicable):
http://buildvm-devops.usersys.redhat.com/puddle/build/OpenShiftEnterprise/1.2/2013-09-27.1/
openshift-origin-cartridge-jbosseap-2.3.11.3-1.git.0.4d0ae9b.el6op.noarch

How reproducible:
Always

Steps to Reproduce:
1.Create a jbosseap-6.0 app
2.ssh into the app, check the JAVA_HOME env variable
[app6-1234.0927-ose.com.cn 5247efce5946d3da75000091]\> echo $JAVA_HOME
/etc/alternatives/java_sdk_1.6.0

So it is using jdk-1.6
[app6-1234.0927-ose.com.cn 5247efce5946d3da75000091]\> ps -ef
UID        PID  PPID  C STIME TTY          TIME CMD
1010      2722     1  0 05:16 ?        00:00:00 /bin/sh /var/lib/openshift/5247efce5946d3da75000091/jbosseap//bin/standalone.sh
1010      2907  2722 25 05:16 ?        00:00:18 /etc/alternatives/java_sdk_1.6.0/bin/java -D[Standalone] -server -XX:+UseCompressedOops -XX:+TieredCompilation -Xmx256m
1010      3862  3834  0 05:17 ?        00:00:00 sshd: 5247efce5946d3da75000091@pts/5
1010      3863  3862  1 05:17 pts/5    00:00:00 /bin/bash --init-file /usr/bin/rhcsh -i
1010      4124  3863  0 05:17 pts/5    00:00:00 ps -ef


Actual results:

Expected results:
It should use /etc/alternatives/java_sdk_1.7.0

Additional info:
After git push operation, the $JAVA_HOME would change to /etc/alternatives/java_sdk_1.7.0, and using /etc/alternatives/java_sdk_1.7.0/bin/java