Makes tor build-dep apt task idempotent
Makes tor build-dep apt task idempotent

For some reason Ansible was always reporting "changed" on this task,
even when the build dependencies have already been installed. Inspecting
the stdout to determine changed status truthfully.

freedomofpress/fingerprint-securedrop,freedomofpress/fingerprint-securedrop,freedomofpress/fingerprint-securedrop,freedomofpress/FingerprintSecureDrop,freedomofpress/FingerprintSecureDrop