Refactor insert/materialize node schemas.
Merge branch 'ENG-6589-adhoc-insert-default' into ENG-5910-insert-into-select

Conflicts:
	tests/frontend/org/voltdb/regressionsuites/TestSqlInsertSuite.java
Merge branch 'master' into ENG-5910-insert-into-select
Merge branch 'master' into ENG-5910-insert-into-select
add some simple test case for coalesce expression
Check ParameterSet for errors before calling Post
(cherry picked from commit 170158a641a792734881c500e6b5c9b2a3608686)
Remove the parenthesis
Merge pull request #1498 from VoltDB/ENG-6566-sqlcommand-latency

Remove the parenthesis
Deallocate the space after the query finishes
refactor test cases and add more interesting cases
make lines no longer than 105 char
change one line comment
Merge pull request #1502 from VoltDB/ENG-6627-deallocate-early-for-release

Deallocate the space after the query finishes
Minor changes in preparation for review
Merge branch 'master' into ENG-5910-insert-into-select
Merge branch 'master' into ENG-6552-COALESCE-function
Merge branch 'master' into ENG-5910-insert-into-select
Add rabbitmq client jar to the classpath in genqa's run.sh.
move test case to TestFunctionsSuite and use case when instead of decode
Merge branch 'master' into ENG-6552-COALESCE-function