initialize executor runner with the default config

this fixes a test that desired a run once based on the executor's stack before
starting it; now it will get the default stack.

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>
reset inigo server variables

this will be more explicit if we're actually polluting them

Signed-off-by: Alex Suraci <asuraci@pivotallabs.com>