Spanner: rationalize 'all_types' round-trip systest#6379

Merged

tseaver merged 3 commits intogoogleapis:masterfrom

tseaver:spanner-rationalize-all_types-systests

Nov 9, 2018

Commits on Nov 2, 2018

Expand 'all_types' table to include arrays of all types.
tseaver
committed
Remove redundant query param bindings tests using 'all_types' table.
tseaver
committed
Refactor round-trip test, 'all_types' data to make feature coverage clearar.
tseaver
committed