Merge pull request #6 from yottatsa/master

Fix empty array get

salt/minion/cert.sls

     - watch:
       - x509: {{ cert_file }}
 
-{%- for ca_path,ca_cert in salt['mine.get'](cert.host, 'x509.get_pem_entries')[cert.host].iteritems() %}
+{%- for ca_path,ca_cert in salt['mine.get'](cert.host, 'x509.get_pem_entries').get(cert.host, {}).iteritems() %}
 
 {%- if '/etc/pki/ca/'+cert.authority in ca_path %}