Add in support for removeKey
Add in support for removeKey

When setting a removeKey the VC would return an error indicating that it
"Unable to determine type of Any". We need to update this to ensure that
the type set is a string or an integer. This is due to the fact that it
can be both.

Change-Id: I494a1d19341f30f22803a3fe6baf020a67ad6b08

openstack/oslo.vmware