Flatten nested queries. Need to test more
More tests for nesting subqueries
Expected output
Reformatted test to have more expressions/conds

this puts in line with the other tests in the same series and
asserts that we do more correctly
Can enable test now that we are using 3.0 API.
merge MMcM: Can enable test now that we are using 3.0 API.

Merge pull request #1585 from MMcM/sql-layer/enable-snapshot-ryw-test
https://github.com/FoundationDB/sql-layer/pull/1585
Merge branch 'master' into flatten-nested

Conflicts:
	fdb-sql-layer-core/src/test/resources/com/foundationdb/sql/optimizer/flatten/README.txt
Made prepareServices an @BeforeClass

the static initializer code caused useless messages when an
exception was thrown during service startup, move it to BeforeClass
for useful error messages
Stop services after the class is done
Remove services running altogether

we don't need them.
Removed imports
merge ScottDugas: Removed services from unit test

Merge pull request #1587 from ScottDugas/sql-layer/clean-test-initialization
https://github.com/FoundationDB/sql-layer/pull/1587
merge ScottDugas: Flatten nested subqueries

Merge pull request #1586 from ScottDugas/sql-layer/flatten-nested
https://github.com/FoundationDB/sql-layer/pull/1586