Do not invoke ssh with -p argument when no port has been specified.

This change allows local SSH configuration to choose the port number
to use when not explicitly set in the manifest.

(cherry picked from commit 4c0f67046543c7c6ab24175e143001f14b76ea01)

Change-Id: Ibea99cfe46b6a2cc27f754cc3944a2fe10f6fda4
1 file changed