I was able to resolve this on my own.   Solution:  Seemed uploading over the WAN (which was fast), still caused enough of a delay that the EULA didnt display and caused the original issue.  instead of uploading from my laptop (over the WAN), i logged into a server that was in the same datacenter as VRO and the upload and install worked fine.  
I have VRA/VRO 8.7 setup.  trying to add the plugin to VRO control center. once I upload and and click the install button, it starts installing, then I get a internal error 500. powermax plugin version:  o11nplugin-dellemc-powermax-1.2.5.165.vmoapp    
Install failed internal error 500