Fix crash loop error in longhorn-iscsi-installation
Fix crash loop error in longhorn-iscsi-installation

We install iscsi in the init container then sleep in the main container.
This avoids crash loop after finishing installing iscsi

Longhorn #1741

Signed-off-by: Phan Le <2d242f367065995aaa8c677fc77edfe825ad74d9@rancher.com>

rancher/longhorn