setup.py: don't use pyasn1 to 0.3.3 until pyasn1-modules is updated to support it
setup.py: don't use pyasn1 to 0.3.3 until pyasn1-modules is updated to support it

Latest pyasn1-modules hard codes pyasn1-0.3.2, so this currently break our tests.
Ref: https://github.com/etingof/pyasn1-modules/issues/4
f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroidserver,f-droid/fdroid-server,f-droid/fdroid-server,f-droid/fdroid-server,fdroidtravis/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,fdroidtravis/fdroidserver,f-droid/fdroid-server,f-droid/fdroidserver,fdroidtravis/fdroidserver