Domain:
JAVA_OPTS is not passed to PC and HC JVMs in domain.ps1

Steps to reproduce:

1. start powershell
2. $env:JAVA_OPTS = "-Da=b"
3. ./domain.bat
4. WMIC PROCESS get Commandline | findstr java
5. check that "a" property is present in PC or HC
6. exit domain.bat
7. ./domain.ps1
8. WMIC PROCESS get Commandline | findstr java
9. check that "a" property is not present in PC or HC

cc: jperkins-rhn

Standalone:
PRESERVE_JAVA_OPTS parameter is not used correctly in standalone.conf.ps1 and standalone.ps1. If user define JAVA_OPTS, default JAVA_OPTS should be ignored (like bat scripts behaviour)