chore(requirements): update pyasn1 to v0.3.2

See https://github.com/etingof/pyasn1/blob/master/CHANGES.rst#revision-032-released-04-08-2017

Author: mboersma

rootfs/requirements.txt

@@ -14,7 +14,7 @@ jsonschema==2.6.0
 morph==0.1.2
 ndg-httpsclient==0.4.2
 packaging==16.8
-pyasn1==0.2.3
+pyasn1==0.3.2
 psycopg2==2.7.1
 pyldap==2.4.37
 pyOpenSSL==17.2.0