Add CRD validation (#599)

* add CRD manifests with validation
* update documentation
* patroni slots is not an array but a nested hash map
* make deps call tools
* cover validation in docs and export it in crds.go
* add toggle to disable creation of CRD validation and document it
* use templated service account also for CRD-configured helm deployment

run_operator_locally.sh

@@ -98,7 +98,7 @@ function build_operator_binary(){
 
     # redirecting stderr greatly reduces non-informative output during normal builds
     echo "Build operator binary (stderr redirected to /dev/null)..."
-    make clean tools deps local test > /dev/null 2>&1
+    make clean deps local test > /dev/null 2>&1
 
 }