ASACORE-1241 connection string prevents Bus attachment

ASACORE-1241 UNIX-specific connection string in
             DeskTopSharedKSClientC.c prevents Bus attachment on
             non-UNIX platforms

Removed the connectArgs variable from line 167 (and suspect connection
string), inlined NULL as a replacement, and replaced connectArgs with
the status code in case of a failure.

Change-Id: I0ed99305a7da0e9968398f7ca5f0eef5fbd50e97
Signed-off-by: Braeden Petruk <braedenp@microsoft.com>
Merge "ASACORE-1241 connection string prevents Bus attachment" into RB14.12