Update requirements.txt

requirements/requirements.txt

@@ -5,8 +5,8 @@ djangorestframework>=3.6.2
 ForgeryPy
 #openpyxl>=2.4.0
 celery>=4.0.2
-paramiko>=2.1.2
-ansible>=2.2.2.0
+paramiko==2.1.2
+ansible==2.2.2.0
 django-simple-captcha>=0.5.5
 django-formtools>=2.0
 sshpubkeys>=2.2.0