Add formatting jsonnet to generate make target

Makefile

+JSONNET_FMT := jsonnet fmt -n 2 --max-blank-lines 2 --string-style s --comment-style s
+
 image:
 	docker build -f ../../scripts/jsonnet/Dockerfile -t po-jsonnet ../../
 
@@ -11,10 +13,14 @@ crdtojsonnet:
 	cat ../../example/prometheus-operator-crd/servicemonitor.crd.yaml | gojsontoyaml -yamltojson > jsonnet/kube-prometheus/prometheus-operator/servicemonitor-crd.libsonnet
 	cat ../../example/prometheus-operator-crd/rulefile.crd.yaml | gojsontoyaml -yamltojson > jsonnet/kube-prometheus/prometheus-operator/rulefile-crd.libsonnet
 
-generate-raw: crdtojsonnet
+generate-raw: crdtojsonnet fmt
 	jb install
 	./build.sh
 
+fmt:
+	find . -name 'vendor' -prune -o -name '*.libsonnet' -o -name '*.jsonnet' -print | \
+		xargs -n 1 -- $(JSONNET_FMT) -i
+
 test: image
 	@echo ">> Compiling assets and generating Kubernetes manifests"
 	docker run --rm -u=$(shell id -u $(USER)):$(shell id -g $(USER)) -v $(shell dirname $(dir $(abspath $(dir $$PWD)))):/go/src/github.com/coreos/prometheus-operator/ --workdir /go/src/github.com/coreos/prometheus-operator/contrib/kube-prometheus po-jsonnet make test-raw
@@ -23,4 +29,4 @@ test-raw: crdtojsonnet
 	jb install
 	./test.sh
 
-.PHONY: image generate crdtojsonnet generate-raw test
+.PHONY: image generate crdtojsonnet generate-raw test test-raw fmt

README.md

@@ -151,16 +151,16 @@ kubeadm:
 
 [embedmd]:# (examples/jsonnet-snippets/kubeadm.jsonnet)
 ```jsonnet
-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-kubeadm.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-kubeadm.libsonnet')
 ```
 
 bootkube:
 
 [embedmd]:# (examples/jsonnet-snippets/bootkube.jsonnet)
 ```jsonnet
-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-bootkube.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-bootkube.libsonnet')
 ```
 
 kops:
@@ -175,22 +175,22 @@ Another mixin that may be useful for exploring the stack is to expose the UIs of
 
 [embedmd]:# (examples/jsonnet-snippets/node-ports.jsonnet)
 ```jsonnet
-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-node-ports.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-node-ports.libsonnet')
 ```
 
 For example the name of the `Prometheus` object provided by this library can be overridden:
 
 [embedmd]:# (examples/prometheus-name-override.jsonnet)
 ```jsonnet
-((import "kube-prometheus/kube-prometheus.libsonnet") + {
+((import 'kube-prometheus/kube-prometheus.libsonnet') + {
    prometheus+: {
      prometheus+: {
        metadata+: {
-				name: "my-name",
-			}
-		}
-	}
+         name: 'my-name',
+       },
+     },
+   },
  }).prometheus.prometheus
 ```
 

examples/jsonnet-snippets/bootkube.jsonnet

-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-bootkube.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-bootkube.libsonnet')

examples/jsonnet-snippets/kubeadm.jsonnet

-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-kubeadm.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-kubeadm.libsonnet')

examples/jsonnet-snippets/node-ports.jsonnet

-(import "kube-prometheus/kube-prometheus.libsonnet") +
-(import "kube-prometheus/kube-prometheus-node-ports.libsonnet")
+(import 'kube-prometheus/kube-prometheus.libsonnet') +
+(import 'kube-prometheus/kube-prometheus-node-ports.libsonnet')

examples/prometheus-name-override.jsonnet

-((import "kube-prometheus/kube-prometheus.libsonnet") + {
+((import 'kube-prometheus/kube-prometheus.libsonnet') + {
    prometheus+: {
      prometheus+: {
        metadata+: {
-				name: "my-name",
-			}
-		}
-	}
+         name: 'my-name',
+       },
+     },
+   },
  }).prometheus.prometheus