Revert "Make the exec command default to a login shell. Fixes #546"
Revert "Make the exec command default to a login shell. Fixes #546"

This reverts commit 8ad90a600511cab995fdc6884d5bca117075fbb2.
This reverts commit 38262fdfccf0851b9e8e734c7804ef44235be504.

99designs/aws-vault,99designs/aws-vault