Basic POM changes.
Move all the YAML resource files.
Update YAML IT to find new test resources where Maven puts them.
Move the YamlTester itself out of the Postgres package.
But keep the YamlTesterIT there; the alternative driver (embedded) isn't quite up to running it, yet.
Get rid of case-name option, which duplicates override option.
But make sure that case-names are actually complete and not just the trailing filename.
merge MMcM: Put YAML IT source into a separate module

Merge pull request #1545 from MMcM/sql-layer/test-yaml-jar
https://github.com/FoundationDB/sql-layer/pull/1545
Split REST services out into a separate plugin.
Make more tests based on plugin test base.
It isn't going to work to know about HttpServletRequest here. Pass in security pieces.
Need routine firewall at test time to call procs.
Copy build results into plugins dir for developer use and thence into packages.
Make the plugins prefix be fdbsql for greater consistency.
Output encoding got lost in shuffle.
Rename restdml service under rest package.
Straighten out required services.