Add units for more merge senarios.
nodes plugin tests: plugin config validation, payload validation.
Add tests for importer strategies error paths.
add errors tests.
927216 - remove CDS section from server.conf.
951889 - correct package names 'pulp-nodes-*'.
Merge pull request #448 from pulp/jortel-951889

951889 - correct package names 'pulp-nodes-*'.
955356 - pulp-nodes-child requires: pulp-agent.
Merge pull request #452 from pulp/jortel-955356

955356 - pulp-nodes-child requires: pulp-agent.
Merge pull request #445 from pulp/jortel-927216

927216 - remove CDS section from server.conf.
Merge pull request #450 from pulp/jortel-node-unit-coverage

Jortel node unit coverage
Merge branch 'pulp-2.1'
Merge branch 'master' into jconnor-887000-sync-no-dispatch