icedtea-web doesn't check for system deployment.properties in RHEL6.5.

Issue

• icedtea-web on RHEL6.5 doesn't appear to check for system (not user) deployment.properties and deployment.config under /etc/.java/deployment. This is needed to be compliant with US Gov't DISA STIG requirements for JRE environment.
• When launching /usr/bin/itweb-settings.itweb, the testing_proxy_name does not appear under network settings. However adding the setting to ~/.icedtea/deployment.properties, it works see below .

# mkdir -p /etc/.java/deployment/

# cat <<EOF
> deployment.system.config.mandatory=True
> deployment.system.config=file\:/etc/.java/deployment
> EOF

# cat <<EOF
> deployment.proxy.http.host=testing_proxy_name
> EOF