Remove ship_utilities

See 2dad906 in teuthology

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
adjust-ulimits and daemon-helper are in $PATH

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Import teuthology tasks (dumpling branch)

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Merge branch 'teuth_dumpling' into tasks_dumpling
Update module references

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>