Enable test for lookups on python 3

Since passlib algo sometime takes a bytes, and sometime
not, depending on a internal variable, we have to convert
bnased on it, or it fail with "TypeError: salt must be bytes,
not str" (or unicode instead of bytes)

However, that's not great to use internal structure for that.

lib/ansible/utils/encrypt.py

@@ -67,7 +67,7 @@ except ImportError:
 
 from ansible import constants as C
 from ansible.errors import AnsibleError
-from ansible.module_utils._text import to_text
+from ansible.module_utils._text import to_text, to_native
 
 __all__ = ['do_encrypt']
 
@@ -84,6 +84,8 @@ def do_encrypt(result, encrypt, salt_size=None, salt=None):
         if salt_size:
             result = crypt.encrypt(result, salt_size=salt_size)
         elif salt:
+            if not crypt._salt_is_bytes:
+                salt = to_native(salt)
             result = crypt.encrypt(result, salt=salt)
         else:
             result = crypt.encrypt(result)

test/utils/shippable/python3-test-tag-blacklist.txt

@@ -1,7 +1,6 @@
 test_filters
 test_git
 test_hg
-test_lookups
 test_pip
 test_service
 test_uri