Description of problem:
When creating content view definition and adding "exclude" type filter on package with exact version, it's publishing fails with error: " 	
Failed to generate content view 'testview' version 6.
undefined method `keys' for [{:term=>{:version=>"01-0.01-1"}}]:Array (NoMethodError) "

Version-Release number of selected component (if applicable):
Katello-Katello-Installation-RegisterRHNClassic-1.1-4.noarch
foreman-postgresql-1.3.0-20.el6sat.noarch
candlepin-scl-runtime-1-5.el6_4.noarch
python-ldap-2.3.10-1.el6.x86_64
apr-util-ldap-1.3.9-3.el6_0.1.x86_64
openldap-2.4.23-31.el6.x86_64
katello-certs-tools-1.4.4-1.el6sat.noarch
pulp-server-2.3.0-0.22.beta.el6sat.noarch
pulp-nodes-parent-2.3.0-0.22.beta.el6sat.noarch
katello-glue-pulp-1.4.6-47.el6sat.noarch
katello-1.4.6-47.el6sat.noarch
candlepin-selinux-0.8.25-1.el6sam.noarch
katello-qpid-broker-key-pair-1.0-1.noarch
Katello-Katello-Configuration-KatelloClient-1.1-53.noarch
Katello-Katello-Installation-Satellite6Latest-1.0-13.noarch
katello-candlepin-cert-key-pair-1.0-1.noarch
katello-qpid-client-key-pair-1.0-1.noarch
foreman-1.3.0-20.el6sat.noarch
katello-cli-common-1.4.3-27.el6sat.noarch
pulp-selinux-2.3.0-0.22.beta.el6sat.noarch
katello-configure-1.4.7-7.el6sat.noarch
pulp-puppet-plugins-2.3.0-0.22.beta.el6sat.noarch
pulp-nodes-common-2.3.0-0.22.beta.el6sat.noarch
pulp-rpm-plugins-2.3.0-0.22.beta.el6sat.noarch
candlepin-scl-1-5.el6_4.noarch
elasticsearch-0.19.9-8.el6sat.noarch
katello-common-1.4.6-47.el6sat.noarch
katello-glue-candlepin-1.4.6-47.el6sat.noarch
katello-glue-elasticsearch-1.4.6-47.el6sat.noarch
candlepin-tomcat6-0.8.25-1.el6sam.noarch
katello-all-1.4.6-47.el6sat.noarch
ruby193-rubygem-ldap_fluff-0.2.2-2.el6sat.noarch
foreman-proxy-1.3.0-3.el6sat.noarch
pulp-rpm-handlers-2.3.0-0.22.beta.el6sat.noarch
katello-agent-1.4.4-3.el6sat.noarch
Katello-Katello-Installation-HammerCLI-1.0-9.noarch
signo-0.0.23-2.el6sat.noarch
katello-cli-1.4.3-27.el6sat.noarch
candlepin-scl-rhino-1.7R3-1.el6_4.noarch
pulp-katello-plugins-0.2-1.el6sat.noarch
candlepin-scl-quartz-2.1.5-5.el6_4.noarch
signo-katello-0.0.23-2.el6sat.noarch
ruby193-rubygem-net-ldap-0.3.1-3.el6sat.noarch
katello-selinux-1.4.4-4.el6sat.noarch
katello-configure-foreman-1.4.7-7.el6sat.noarch
candlepin-0.8.25-1.el6sam.noarch
katello-foreman-all-1.4.6-47.el6sat.noarch
candlepin-cert-consumer-hades.usersys.redhat.com-1.0-1.noarch
Katello-Katello-Sanity-ImportKeys-1.2-1.noarch

How reproducible:
always

Steps to Reproduce:
1. create custom provider/product/repo (zoo3), sync repo
2. create content definition, add zoo3 repo into it
3. create filter, add zoo3 repo to it and add rule to exclude any package with provided version, for example exclude "walrus" version "5.21".
4. try to publish content definition, it will fail.

Actual results:
content definition files when there is exclude package version filter there

Expected results:
it should publish successfully

Additional info:
it works ok when filter does not contain exact version like when it filters all versions, range, min/max versions.