gnu: Fix python inputs, part 1: all inputs become propagated-inputs.

This patch contains the changes where all [inputs] are changed to
[propagated-inputs]

* gnu/packages/python.scm (python-passlib, python-paramiko, python-ccm,
  python-babel, python-keyring python-pandas, python-tzlocal,
  python-parse-type, python-nose2, python-pytest, python-pytest-mock,
  python-pytest-xdist, python-scripttest, python-testtools, python-pytest-cov,
  python-testscenarios, python-pbr-0.11, python-oauthlib, python-jinja2,
  python-sphinx, python-tzlocal, python-bugz, python2-pytest-mock, behave,
  pelican, sqlalchemy-utils, python-pygridtools, python-urwidtrees,
  python-tornado, python2-tornado, python-debian, python-execnet,
  python-pytest-cache, pytest-localserver, python-clint, python-rply,
  python-hy, python-rauth, python-rsa, python-celery, python-vobject, s3cmd,
  python-prompt-toolkit, ptpython, python-requests-oauthlib, python-stem,
  python-binaryornot, python2-binaryornot, python-nltk, python-pymongo,
  python-schematics, python-url, python2-url, python-freezegun,
  python-glances, python-graphql-core, python-graphql-relay, python-graphene,
  python-nautilus, python-s3transfer): All [inputs] become
  [propagated-inputs].
* gnu/packages/bioinformatics.scm (python-biopython): Likewise.
* gnu/packages/django.scm (pytest-django): Likewise.
* gnu/packages/mail.scm (python-mailmanclient): Likewise.
* gnu/packages/password-utils.scm (python-bcrypt): Likewise.
* gnu/packages/propbuf.scm (python-protobuf): Likewise.
* gnu/packages/rdf.scm (python-rdflib): Likewise.

SQACH all become propagated

gnu/packages/password-utils.scm

@@ -361,7 +361,7 @@ winner of the 2015 Password Hashing Competition.")
     (native-inputs
      `(("python-pycparser" ,python-pycparser)
        ("python-pytest" ,python-pytest)))
-    (inputs
+    (propagated-inputs
      `(("python-cffi" ,python-cffi)
        ("python-six" ,python-six)))
     (home-page "https://github.com/pyca/bcrypt/")