Add Sample ReST API path in webapi document

Sample type has been described in webapi document, but API path is
missing, this patch fixes it.

Change-Id: I09248aac036479c9ccd250824de4df05713bfaa1
Closes-Bug: #1388507
VMware: Enable VMware inspector to support any port

If vCenter is configured to use any port other than 443,
the inspector fails to connect to vCenter.
This patch adds a configurable parameter host_port in
ceilometer config under vmware section.

DocImpact
Change-Id: I9035b32ffbc58bb1801b02abdce4bc83a3427308
Closes-Bug: #1387050
Merge "Add Sample ReST API path in webapi document"