Use modern execution patterns, goal is so that these same tests
can work for the future engine
break sequence tests into test_sequences suite
sequence tests that are testing implicit execution patterns
at least move into their own suite that will go into test_deprecations
eventually.
Change-Id: I27cac9bd265c86ff2a3381ff9f844f60ef991cfc
(cherry picked from commit 4cadeaf6e68d71c2cb36219f72cc4d337e31df88)
Mike Bayer