Satellite webUI crashes with `KeyError: searching: execution_plan by: {:uuid=>"cafec102-3f18-4838-b8ed-92a6b54bfbb6"}` error.

Issue

• Cannot view sync status, Satellite loads a generic page that reads:

We're sorry, but something went wrong.

• Unable to view the attached yum content of content views. Below error is seen in the production log.

2017-03-06 07:57:09 [app] [I]   Rendered /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.0.0.95/app/views/katello/api/v2/repositories/index.json.rabl within katello/api/v2/lay
outs/collection (490.9ms)
2017-03-06 07:57:09 [app] [E] KeyError: searching: execution_plan by: {:uuid=>"cafec102-3f18-4838-b8ed-92a6b54bfbb6"}
 | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-0.8.13.3/lib/dynflow/persistence_adapters/sequel.rb:257:in `load_record'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-0.8.13.3/lib/dynflow/persistence_adapters/sequel.rb:76:in `load_execution_plan'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-0.8.13.3/lib/dynflow/persistence.rb:46:in `load_execution_plan'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/foreman-tasks-0.7.14.11/app/models/foreman_tasks/task/dynflow_task.rb:49:in `execution_plan'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/foreman-tasks-0.7.14.11/app/models/foreman_tasks/task/dynflow_task.rb:45:in `progress'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/helpers.rb:20:in `data_object_attribute'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:140:in `attribute'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:114:in `block in compile_settings'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:113:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:113:in `compile_settings'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:53:in `block in to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:248:in `cache_results'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:49:in `to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:86:in `to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:48:in `block in render'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:382:in `cache_results'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:47:in `render'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:124:in `block (2 levels) in merge_engines_into_result'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:123:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:123:in `block in merge_engines_into_result'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:119:in `each'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:119:in `merge_engines_into_result'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:55:in `block in to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:248:in `cache_results'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:49:in `to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:86:in `to_hash'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:48:in `block in render'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:382:in `cache_results'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/engine.rb:47:in `render'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:127:in `block in merge_engines_into_result'
 | /opt/theforeman/tfm/root/usr/share/gems/gems/rabl-0.11.6/lib/rabl/builder.rb:119:in `each'