Ensure create server updates plugin config xml after copying config files

[cherylking]

Fixes #1788

[cherylking]

I changed exportParametersToXml to take a boolean to indicate whether the server specific config should be included (the values of which are only valid after copyConfigFiles() is called). To test it, I added a log statement indicating whether the method was called with true or false. When true is passed, the server specific config is included. Here is a screenshot showing the first call has the value false (this is from PluginConfigSupport.installServerAssembly()), and the second and third calls have the value true (this is from PluginConfigSupport.copyConfigFiles() which is called from the create goal and the deploy goal in the test case I ran).

[scottkurz]

LGTM. We might have some small difference in the <refresh> element value after this PR, but I think the new behavior is consistent enough. It's hard to imagine a tool getting too much value out of this value in any case, so not worried about the change.