(cherry picked from commit 27740a6)

…ertThat instead of Assert#assertThat.

(cherry picked from commit 4c52916)

…leRunner.ParameterizedRunner constructor in order for it to work both with JUnit 4.12 and 4.13.2.

(cherry picked from commit 9516a26)

…re new JUnit features. Replace deprecated JUnit API usage.

(cherry picked from commit 4b71d80)

(cherry picked from commit a2d8e93)

(cherry picked from commit 5a484cb)

(cherry picked from commit 311c90b)

(cherry picked from commit a97799c)

This makes sure .dot-files are removed also at the root of the
repository if they are not explicitly included.

Preserve .clang-format for style gate

(cherry picked from commit 23afcd3)

(cherry picked from commit ca093c4)