Make sdk member type related types and vars type specific

Previously, some of the sdk member type related types and variables
included the words "member type" whereas others only used the word
"member" and did not include "type". This changes makes them all
include the word "type" to differentiate them from other types related
to sdk members.

Bug: 195754365
Test: m nothing
Change-Id: I913daaa1d436fd5dc857c2af0ffdee6471dcc6ed