Description of problem:

After upgrading Triggers from 0.25.x to 0.26.0 and sending request to EL is not creating TaskRun/PipelineRun as expected

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

 * Install 0.25.x

• Create EL resources
• Send request then see TaskRUn getting created
• Upgrade to 0.26.0
• wait for EL pod recreation
• Send request but this time new TaskRUn didn't created

Actual results:

After the upgrade when we send request to EL no resources are getting created

Expected results:

After the upgrade when we send request to EL should create respective resources

Reproducibility (Always/Intermittent/Only Once):

Work Around:

1.  reCreate or edit triggertemplate resource by changing `resourcetemplates` to `resourceTemplates{}