Add python3 dependencies to bindep.txt

[pabelanger]

This is helpful when we bring online fedora-29 images.

Signed-off-by: Paul Belanger pabelanger@redhat.com

[softwarefactory-project-zuul[bot]]

Build succeeded.

• tox-linters : SUCCESS in 5m 34s
• ansible-network-tox-py27 : SUCCESS in 7m 15s
• ansible-network-tox-py36 : SUCCESS in 4m 22s
• ansible-test-sanity : FAILURE in 5m 58s (non-voting)
• dco-license : SUCCESS in 29s

[softwarefactory-project-zuul[bot]]

Build succeeded (gate pipeline).

• tox-linters : SUCCESS in 4m 33s
• ansible-network-tox-py27 : SUCCESS in 4m 11s
• ansible-network-tox-py36 : SUCCESS in 5m 44s
• dco-license : SUCCESS in 28s