Use --vv and --trace in E2E

Based on the documenation, increase verbosity to improve the ability to
debug issues based on the Ginkgo output:

  --vv
    If set, emits with maximal verbosity - includes skipped and pending tests.

  --trace
    If set, default reporter prints out the full stack trace when a failure
    occurs

Signed-off-by: Matthias Diester <matthias.diester@de.ibm.com>

Makefile

@@ -39,7 +39,7 @@ TEST_NAMESPACE ?= default
 TEKTON_VERSION ?= v0.65.0
 
 # E2E test flags
-TEST_E2E_FLAGS ?= -r -p --randomize-all -timeout=1h -trace -v
+TEST_E2E_FLAGS ?= -r -p --randomize-all --timeout=1h --trace --vv
 
 # E2E test service account name to be used for the build runs, can be set to generated to use the generated service account feature
 TEST_E2E_SERVICEACCOUNT_NAME ?= pipeline