For each vSwitch being used to send Capture traffic to the SA VMs, click "Properties...":
Select the Virtual Machine Port Group for the SA VM's capture interface(s), and select "Edit...":
Modify the port group's VLAN ID field to pass either the single desired VLAN ID (a number between 1 and 4094) that the SA VM needs to capture, or, set it to "All (4095)" to pass all VLAN-tagged traffic to the SA VM. Click OK to save changes.
The SA VM should now see the desired VLAN-tagged traffic on its Capture interface(s).