implementing PasswordValidator and uncommenting other tests

app/utils/PasswordValidator.py

+import string
+from django.core.exceptions import ValidationError
+
+
+class PasswordPolicyValidator(object):
+    def validate(self, password, user=None):
+        if sum(c.isdigit() for c in password) < 1:
+            msg = 'Password must contain at least 1 number.'
+            raise ValidationError(msg)
+
+        if not any(c.isupper() for c in password):
+            msg = 'Password must contain at least 1 uppercase letter.'
+            raise ValidationError(msg)
+
+        if not any(c.islower() for c in password):
+            msg = 'Password must contain at least 1 lowercase letter.'
+            raise ValidationError(msg)
+
+        if not any(c for c in password if c in string.punctuation):
+            msg = 'Password must contain at least 1 special letter.'
+            raise ValidationError(msg)
+
+        if len(password) < 8 :
+            msg = 'Password must have at least 8 characters.'
+            raise ValidationError(msg)
+
+    def get_help_text(self):
+        return _(
+            "Your password is not complying to our password policy"
+        )