Added support for tftp service and updated service interface and config

go.mod

@@ -3,48 +3,48 @@ module github.com/hpcng/warewulf
 go 1.15
 
 require (
-	github.com/BurntSushi/toml v0.3.1
-	github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5
-	github.com/beorn7/perks v1.0.1
+	github.com/BurntSushi/toml v0.3.1 // indirect
+	github.com/Microsoft/go-winio v0.4.15-0.20190919025122-fc70bd9a86b5 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/brotherpowers/ipsubnet v0.0.0-20170914094241-30bc98f0a5b1
-	github.com/containerd/containerd v1.3.2
+	github.com/containerd/containerd v1.3.2 // indirect
 	github.com/containers/image/v5 v5.7.0
-	github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b
-	github.com/containers/ocicrypt v1.0.3
-	github.com/containers/storage v1.23.6
-	github.com/docker/distribution v2.7.1+incompatible
-	github.com/docker/docker v1.4.2-0.20191219165747-a9416c67da9f
-	github.com/docker/docker-credential-helpers v0.6.3
-	github.com/docker/go-connections v0.4.0
-	github.com/docker/go-metrics v0.0.1
-	github.com/docker/go-units v0.4.0
+	github.com/containers/libtrust v0.0.0-20190913040956-14b96171aa3b // indirect
+	github.com/containers/ocicrypt v1.0.3 // indirect
+	github.com/containers/storage v1.23.6 // indirect
+	github.com/docker/distribution v2.7.1+incompatible // indirect
+	github.com/docker/docker v1.4.2-0.20191219165747-a9416c67da9f // indirect
+	github.com/docker/docker-credential-helpers v0.6.3 // indirect
+	github.com/docker/go-connections v0.4.0 // indirect
+	github.com/docker/go-metrics v0.0.1 // indirect
+	github.com/docker/go-units v0.4.0 // indirect
 	github.com/fatih/color v1.9.0 // indirect
-	github.com/ghodss/yaml v1.0.0
-	github.com/gogo/protobuf v1.3.1
-	github.com/golang/protobuf v1.4.2
-	github.com/gorilla/mux v1.7.4
-	github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a
-	github.com/kelseyhightower/envconfig v1.4.0
-	github.com/klauspost/compress v1.11.1
-	github.com/klauspost/pgzip v1.2.5
-	github.com/lunixbochs/vtclean v0.0.0-20180621232353-2d01aacdc34a
+	github.com/ghodss/yaml v1.0.0 // indirect
+	github.com/gogo/protobuf v1.3.1 // indirect
+	github.com/golang/protobuf v1.4.2 // indirect
+	github.com/gorilla/mux v1.7.4 // indirect
+	github.com/juju/ansiterm v0.0.0-20180109212912-720a0952cc2a // indirect
+	github.com/kelseyhightower/envconfig v1.4.0 // indirect
+	github.com/klauspost/compress v1.11.1 // indirect
+	github.com/klauspost/pgzip v1.2.5 // indirect
+	github.com/lunixbochs/vtclean v0.0.0-20180621232353-2d01aacdc34a // indirect
 	github.com/manifoldco/promptui v0.8.0
-	github.com/mattn/go-colorable v0.1.6
-	github.com/mattn/go-isatty v0.0.12
-	github.com/matttproud/golang_protobuf_extensions v1.0.1
-	github.com/mtrmac/gpgme v0.1.2
-	github.com/opencontainers/go-digest v1.0.0
+	github.com/mattn/go-colorable v0.1.6 // indirect
+	github.com/mattn/go-isatty v0.0.12 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mtrmac/gpgme v0.1.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
 	github.com/opencontainers/image-spec v1.0.2-0.20190823105129-775207bd45b6
 	github.com/opencontainers/umoci v0.4.6
-	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.1.0
-	github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4
-	github.com/prometheus/common v0.6.0
-	github.com/prometheus/procfs v0.0.3
-	github.com/russross/blackfriday/v2 v2.0.1
-	github.com/sirupsen/logrus v1.7.0
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.1.0 // indirect
+	github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4 // indirect
+	github.com/prometheus/common v0.6.0 // indirect
+	github.com/prometheus/procfs v0.0.3 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
+	github.com/sirupsen/logrus v1.7.0 // indirect
 	github.com/spf13/cobra v1.1.1
-	github.com/ttacon/chalk v0.0.0-20160626202418-22c06c80ed31
+	github.com/ttacon/chalk v0.0.0-20160626202418-22c06c80ed31 // indirect
 	github.com/ulikunitz/xz v0.5.8 // indirect
 	github.com/vbauerster/mpb/v5 v5.3.0 // indirect
 	go.etcd.io/bbolt v1.3.5 // indirect