VMware: Disable suds caching

The default cache implementation in suds store pickled objects in a
predictable path in /tmp which could lead to attacks. This patch
turns off suds caching to address this security issue.

Change-Id: I7daaa25a0677004e03896298e9c3026d5c33c6ac
Closes-Bug: #1341954
Merge "VMware: Disable suds caching"