Revert "Fixes #33: hystrix commands no longer Error.reset"

This reverts commit 19917e9577e17fff75e184033acbebb9440f0c5d.
Revert "Fixed #32: mongo metadata no longer pops errors in finally.  fixed integration test that was not checking right context"

This reverts commit 454d377d7828366a96716ccf0e96285345583fd3.
Revert "Fixes #31: metadata parser no longer pops inside finally blocks"

This reverts commit 79b15465083b619b70ec9ef08e03962bbbe9581c.