Revert "bots: Put ssh control socket into our VM temp dir instead of /tmp"
Revert "bots: Put ssh control socket into our VM temp dir instead of /tmp"

Apparently this broke the selenium tests.

This reverts commit 45d4fa0311753ebac5b1e41b47dc0cb4711ba6b3.

Closes #12448
deryni/cockpit,martinpitt/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,cockpituous/cockpit,martinpitt/cockpit,deryni/cockpit,cockpituous/cockpit,garrett/cockpit,deryni/cockpit,cockpituous/cockpit,cockpit-project/cockpit,deryni/cockpit,moraleslazaro/cockpit,deryni/cockpit,martinpitt/cockpit,garrett/cockpit,deryni/cockpit,cockpituous/cockpit,cockpituous/cockpit,mvollmer/cockpit,cockpit-project/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,cockpit-project/cockpit,mvollmer/cockpit,garrett/cockpit,cockpit-project/cockpit,mvollmer/cockpit,garrett/cockpit,deryni/cockpit,moraleslazaro/cockpit,garrett/cockpit,cockpituous/cockpit,martinpitt/cockpit,cockpit-project/cockpit