Shorten logging output to time

I am not sure we ever need the millisecond output. The date is typically
also clear from the output (we could print the date at the beginning,
once, instead, but this is not done here. Finally, in Jenkins, we
typically get time stamps. Thus, it's not necessary to print this by
default.

On the other hand, since it might be useful when running locally, make
time stamps in logs configurable.

ci-scripts/run_locally.sh

@@ -31,15 +31,15 @@ docker tag oai-nr-cuup oai-ci/oai-nr-cuup:develop-${SHORT_COMMIT_SHA}
 python3 main.py --mode=InitiateHtml --ranRepository=NONE --ranBranch=${CURRENT_BRANCH} \
     --ranCommitID=${COMMIT_SHA} --ranAllowMerge=false \
     --ranTargetBranch=NONE \
-    --XMLTestFile=xml_files/${TESTCASE} --local
+    --XMLTestFile=xml_files/${TESTCASE} --local --datefmt="%H:%M:%S"
 
 python3 main.py --mode=TesteNB --ranRepository=NONE --ranBranch=${CURRENT_BRANCH} \
     --ranCommitID=${COMMIT_SHA} --ranAllowMerge=false \
     --ranTargetBranch=NONE \
     --eNBSourceCodePath=${REPO_PATH} \
-    --XMLTestFile=${TESTCASE} --local
+    --XMLTestFile=${TESTCASE} --local --datefmt="%H:%M:%S"
 RET=$?
 
-python3 main.py --mode=FinalizeHtml --local
+python3 main.py --mode=FinalizeHtml --local --datefmt="%H:%M:%S"
 
 exit ${RET}