java_version fact creates heap dumps

java_version fact collection sets heap size too low for some version, which causes fact java to crash and create a heap file:

1. ls /root/hs_err_pid*|wc -l
   2828

1. java -Xmx8m -version 2>&1
   #
2. A fatal error has been detected by the Java Runtime Environment:
   #
3. SIGSEGV (0xb) at pc=0x00007fdf05fd3377, pid=13401, tid=140595883497216
   #
4. JRE version: 6.0_41-b41
5. Java VM: OpenJDK 64-Bit Server VM (23.41-b41 mixed mode linux-amd64 compressed oops)
6. Derivative: IcedTea6 1.13.13
7. Distribution: Red Hat Enterprise Linux Server release 6.8 (Santiago), package rhel-1.13.13.1.el6_8-x86_64
8. Problematic frame:
9. V [libjvm.so+0x395377] __printf_chk+0x395377
   #
10. Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
    #
11. An error report file with more information is saved as:
12. /root/hs_err_pid13401.log
    #
13. If you would like to submit a bug report, please include
14. instructions how to reproduce the bug and visit:
15. http://icedtea.classpath.org/bugzilla
    #
    Aborted

1. java -version 2>&1
   java version "1.6.0_41"
   OpenJDK Runtime Environment (IcedTea6 1.13.13) (rhel-1.13.13.1.el6_8-x86_64)
   OpenJDK 64-Bit Server VM (build 23.41-b41, mixed mode)

1. cat /etc/redhat-release
   Red Hat Enterprise Linux Server release 6.9 (Santiago)