ci: use gcovr 5.0 to generate code coverage reports

Add badges to README.md

Change-Id: I7c5b2c6fc39654e4552c3ccfc11f2a2c0cdc4d34
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index c021e54..90f7bb4 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -37,7 +37,8 @@
 
     case $JOB_NAME in
         *code-coverage)
-            sudo apt-get -qy install gcovr lcov
+            sudo apt-get -qy install lcov python3-pip
+            pip3 install --user --upgrade --upgrade-strategy=eager 'gcovr~=5.0'
             ;;
         *Docs)
             sudo apt-get -qy install doxygen graphviz python3-pip