test/models/command: added test for seed. added expected first values as a test when there is a seed
test/models/command: added test for seed. added expected first values as a test when there is a seed

stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/stan,stan-dev/stan,stan-dev/stan,stan-dev/math,stan-dev/stan,stan-dev/math,stan-dev/math,stan-dev/math,stan-dev/math