Commits on May 29, 2020

1. Optimize start time for TaskRuns with no sidecars …

   When no sidercars are present **and** the cluster does not use
   injected sidecars, the pipeline controller can optimize the
   TaskRun Pod creation process by setting the `tekton.dev/ready`
   annotation before pod creation itself instead of setting it after
   the pod has been created.
   
   This commit adds an option to a new `config-features` ConfigMap
   called `running-in-environment-with-injected-sidecars`. Enabling
   this option will decrease the time it takes for a TaskRun to start
   running(when no sidecars are present). However, for clusters that
   use injected sidecars e.g. istio enabling this option can lead to
   unexpected behavior.By default, the option is set to "true" for
   backwards compatibility.
   
   Fixes tektoncd#2080
   
   Signed-off-by: Dibyo Mukherjee <dibyo@google.com>

   

   dibyom committed May 29, 2020
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