Comment 1 for bug 1640771

2016-11-10 00:20:56 +0000 Puppet (err): Execution of '/usr/bin/yum -d 0 -e 0 -y install python-nova' returned 1: Error: Package: python2-cryptography-1.3.1-3.el7.x86_64 (ol7_latest)
           Requires: python-cffi >= 1.4.1
           Available: python-cffi-1.1.2-3.el7~mos1.x86_64 (mos)
               python-cffi = 1.1.2-3.el7~mos1
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest
2016-11-10 00:20:56 +0000 /Stage[main]/Nova/Package[python-nova]/ensure (err): change from absent to present failed: Execution of '/usr/bin/yum -d 0 -e 0 -y install python-nova' returned 1: Error: Package:
 python2-cryptography-1.3.1-3.el7.x86_64 (ol7_latest)
           Requires: python-cffi >= 1.4.1
           Available: python-cffi-1.1.2-3.el7~mos1.x86_64 (mos)
               python-cffi = 1.1.2-3.el7~mos1
 You could try using --skip-broken to work around the problem