iSCSI types / providers

Support for
- Enabling / Disabling software iSCSI in kernel
- Setting IQN name on iSCSI HBAs
- Configuring iSCSI send targets (dynamic discovery)
- Mounting VMFS (iSCSI / FC) datastores
fixed typo in test file
map fix for iscsi_target provider
map munge type tweak for iscsi target port
fixes requested in PR review
Merge pull request #109 from dscherer/iscsi

Iscsi