Add separate go.mod files to use it with deprecated 1.16

Makefile

@@ -23,6 +23,11 @@ all: $(APP)
 
 $(APP): $(GOSRC)
 	make -C collectors
+	if [ "$(shell go version | cut -d' ' -f 3 | cut -d '.' -f1-2)" == "go1.16" ]; then \
+		cp go.mod.1.16 go.mod; \
+	else \
+		cp go.mod.1.17+ go.mod; \
+	fi
 	go get
 	go build -o $(APP) $(GOSRC_APP)
 

go.mod

@@ -1,16 +1,35 @@
 module github.com/ClusterCockpit/cc-metric-collector
 
-go 1.16
+go 1.17
 
 require (
+	github.com/ClusterCockpit/cc-units v0.0.0-20220318130935-92a0c6442220
 	github.com/NVIDIA/go-nvml v0.11.6-0
 	github.com/PaesslerAG/gval v1.1.2
 	github.com/gorilla/mux v1.8.0
 	github.com/influxdata/influxdb-client-go/v2 v2.8.1
 	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf
-	github.com/nats-io/nats-server/v2 v2.8.0 // indirect
 	github.com/nats-io/nats.go v1.14.0
 	github.com/prometheus/client_golang v1.12.1
 	github.com/stmcginnis/gofish v0.13.0
 	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad
 )
+
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/deepmap/oapi-codegen v1.8.2 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/nats-io/nats-server/v2 v2.8.0 // indirect
+	github.com/nats-io/nkeys v0.3.0 // indirect
+	github.com/nats-io/nuid v1.0.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	golang.org/x/crypto v0.0.0-20220112180741-5e0467b6c7ce // indirect
+	golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 // indirect
+	google.golang.org/protobuf v1.26.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)

go.mod.1.16

@@ -0,0 +1,16 @@
+module github.com/ClusterCockpit/cc-metric-collector
+
+go 1.16
+
+require (
+	github.com/NVIDIA/go-nvml v0.11.6-0
+	github.com/PaesslerAG/gval v1.1.2
+	github.com/gorilla/mux v1.8.0
+	github.com/influxdata/influxdb-client-go/v2 v2.7.0
+	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf
+	github.com/nats-io/nats-server/v2 v2.8.0 // indirect
+	github.com/nats-io/nats.go v1.14.0
+	github.com/prometheus/client_golang v1.12.1
+	github.com/stmcginnis/gofish v0.13.0
+	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad
+)

go.mod.1.17+

@@ -0,0 +1,16 @@
+module github.com/ClusterCockpit/cc-metric-collector
+
+go 1.17
+
+require (
+	github.com/NVIDIA/go-nvml v0.11.6-0
+	github.com/PaesslerAG/gval v1.1.2
+	github.com/gorilla/mux v1.8.0
+	github.com/influxdata/influxdb-client-go/v2 v2.8.1
+	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf
+	github.com/nats-io/nats-server/v2 v2.8.0 // indirect
+	github.com/nats-io/nats.go v1.14.0
+	github.com/prometheus/client_golang v1.12.1
+	github.com/stmcginnis/gofish v0.13.0
+	golang.org/x/sys v0.0.0-20220412211240-33da011f77ad
+)