Update spec file and vault class to handle api changes within ansible. …

…Closes #343.

requirements.txt

@@ -1,4 +1,4 @@
-ansible==2.3.1.0
+ansible
 pexpect
 future
 sh

rho.spec

@@ -17,12 +17,12 @@ BuildRequires: python-setuptools
 BuildRequires: pandoc
 Requires: python-netaddr
 Requires: python-crypto
-Requires: ansible = 2.3.1.0
+Requires: ansible
 Requires: pexpect
 Requires: python-six
 Requires: python-enum34
 Requires: python-yaml
-Requires: epel-release
+%{?rhel:Requires: epel-release}
 Requires: python2-future
 Requires: python2-sh
 Requires: python2-pyxdg

rho/vault.py

@@ -87,7 +87,15 @@ class Vault(object):
 
     def __init__(self, password):
         self.password = password
-        self.vault = VaultLib(password)
+
+        try:
+            from ansible.parsing.vault import VaultSecret
+            from ansible.module_utils._text import to_bytes
+            pass_bytes = to_bytes(password, encoding='utf-8', errors='strict')
+            secrets = [('password', VaultSecret(_bytes=pass_bytes))]
+            self.vault = VaultLib(secrets=secrets)
+        except ImportError:
+            self.vault = VaultLib(password)
 
     def load(self, stream):
         """ Read vault steam and return python object