CA-134864: Fix plugin-call for SXM.

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>
Reviewed-by: Chandrika Srinivasan <chandrika.srinivasan@citrix.com>

GitHub: closes #173 xapi-project/sm
CP-8657: Remove iSL references from storage manager.

- Removed all code references
- Removed all CSLG error codes
- Replaced CSLGXMLParse to XMLParse

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>
Reviewed-by: Chandrika Srinivasan <chandrika.srinivasan@citrix.com>

GitHub: closes #183 xapi-project/sm