Sync accumulated minor diffs in llgs branch gdb-remote tests.

I've been making some subtle changes to the gdb-remote tests as I implement
them in the llgs branch.  This check-in rectifies the set of diffs that
have accumulated in the llgs branch that were not present upstream.


git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@210957 91177308-0d34-0410-b5e6-96231b3b80d8