add endpoint for clearing drupal cache (+merge previous commits)

4 jobs for 1.2.7 in 3 minutes and 17 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #83236
test

00:01:24

passed #83235
mbr
test-chart

00:00:15

 
  Publish
passed #83237
mbr
build-tagged-image

00:01:52

passed #83238
mbr
publish-chart

00:00:16