Merge branch 'caching' into 'master'

Caching

See merge request !6
3 jobs for master in 58 seconds (queued for 24 seconds)
Status Job ID Name Coverage
  Build
failed #56312
build

00:00:58

 
  Test
skipped #56313
test
 
  Deploy
skipped #56314
deploy
 
Name Stage Failure
failed
build Build There is an unknown failure, please try again
Checking out 30203ad2 as master...
Skipping Git submodules setup
$ git submodule update $GIT_SUBMODULE_OPTS
error: Your local changes to the following files would be overwritten by checkout:
org.fortiss.af3.exploration.smt/plugin.xml
Please commit your changes or stash them before you switch branches.
Aborting
Unable to checkout '7f59418c47e39864b96c83de248eadefcf2cbc4b' in submodule path 'bundles/af3'
ERROR: Job failed: exit code 1