[eclipselink-dev] Submitted patch for Bug 289894 - Need to merge Oracle

[Edwin Tang <EDWIN.TANG@xxxxxxxxxx>]

The patch for the bug has been submitted to the trunk at revision 5182 and 1.1.0 branch at revision 5183.
https://bugs.eclipse.org/bugs/show_bug.cgi?id=289894

Change Summary:
1. Introduced 2 properties in trunk/jpa/eclipselink.jpa.test/test.properties
## Oracle proxy authentication needs to be setup to run proxy authentication tests
# oracle.proxy.user=PAS_PROXY
# oracle.proxy.authentication.is.setup=false

2. Introduced the following condition
    <!-- This checks if the environment is ready for proxy authentication tests -->
    <condition property="is.ready.for.proxy.authentication">
        <and>
            <isset property="is.oracle"/>
            <contains string="${oracle.proxy.authentication.is.setup}" substring="true"/>
        </and>
    </condition>
3. Oracle proxy authentication tests run only if property  is.ready.for.proxy.authentication is true

4. Oracle proxy authentication tests are added in targets <test-lrg>, <test-oracle> and <server-test-lrg>

Code reviewed by: Yiping Zhao