make /usr/bin/ch-ssh binding optional
Automatically binding /usr/bin/ch-ssh if present complicates RPM testing (#338), seems to be a little-used feature, and violates the principle of least surprise, so only do it with a command line switch.
Automatically binding /usr/bin/ch-ssh if present complicates RPM testing (#338), seems to be a little-used feature, and violates the principle of least surprise, so only do it with a command line switch.