Add requirements and build changes

* passlib
* pwquality bindings for python3
* cracklib-runtime for password dictionaries
* alphabetize the requirements list

.travis.yml

@@ -5,6 +5,8 @@ python:
   - "3.6"
   - "3.7"
   - "3.8-dev"
+before_install:
+  - sudo apt-get install -y libpwquality-dev cracklib-runtime
 install:
   - python -m pip install --upgrade -r requirements.txt
   - python -m pip install --upgrade -r test-requirements.txt

requirements.txt

@@ -1,16 +1,20 @@
-PyYaml
-attrs
-SQlAlchemy
-sqlalchemy_repr
 alembic
+attrs
 jsonschema
-voluptuous
 kitchen
+passlib
 pubmarine >= 0.3
+# These are extracted from the 1.4.0 version of libpwquality
+# Need the pwquality library and header files installed in order to install
+https://toshio.fedorapeople.org/python/pwquality-1.4.0.tar.gz
+PyYaml
+SQlAlchemy
+sqlalchemy_repr
 straight.plugin
 
 # Need a version newer than 0.4.7
 #twiggy > 0.4.7
 -e git+https://github.com/wearpants/twiggy#egg=Twiggy
 
 urwid > 1.3.1
+voluptuous