Update chirpstack-api to 4.0.0-rc.1.

Author: brocaar

Makefile

@@ -1,13 +1,13 @@
 .PHONY: build dev-requirements devshell
-VERSION := $(shell git describe --always |sed -e "s/^v//")
+BUILD_VERSION := $(shell git describe --always |sed -e "s/^v//")
 
 GW_GEN := protoc -I=/googleapis -I=chirpstack/api/proto --grpc-gateway_out=paths=source_relative,logtostderr=true:.
 API_GEN := protoc -I=/googleapis -I=chirpstack/api/proto --openapiv2_out ./openapiv2 --openapiv2_opt logtostderr=true
 GRPC_GEN := protoc -I=/googleapis -I=chirpstack/api/proto --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative
 
 build:
 	mkdir -p build
-	go build $(GO_EXTRA_BUILD_ARGS) -ldflags "-s -w -X main.version=$(VERSION)" -o build/chirpstack-rest-api main.go
+	go build $(GO_EXTRA_BUILD_ARGS) -ldflags "-s -w -X main.version=$(BUILD_VERSION)" -o build/chirpstack-rest-api main.go
 
 dist:
 	goreleaser

chirpstack

@@ -1341,6 +1341,10 @@
             "$ref": "#/definitions/commonMetricDataset"
           },
           "description": "Datasets."
+        },
+        "kind": {
+          "$ref": "#/definitions/commonMetricKind",
+          "description": "Kind."
         }
       }
     },
@@ -1361,6 +1365,16 @@
         }
       }
     },
+    "commonMetricKind": {
+      "type": "string",
+      "enum": [
+        "COUNTER",
+        "ABSOLUTE",
+        "GAUGE"
+      ],
+      "default": "COUNTER",
+      "description": " - COUNTER: Incrementing counters that never decrease (these are not reset on each reading).\n - ABSOLUTE: Counters that do get reset upon reading.\n - GAUGE: E.g. a temperature value."
+    },
     "protobufAny": {
       "type": "object",
       "properties": {

openapiv2/api/device.swagger.json

@@ -606,6 +606,10 @@
             "$ref": "#/definitions/commonMetricDataset"
           },
           "description": "Datasets."
+        },
+        "kind": {
+          "$ref": "#/definitions/commonMetricKind",
+          "description": "Kind."
         }
       }
     },
@@ -626,6 +630,16 @@
         }
       }
     },
+    "commonMetricKind": {
+      "type": "string",
+      "enum": [
+        "COUNTER",
+        "ABSOLUTE",
+        "GAUGE"
+      ],
+      "default": "COUNTER",
+      "description": " - COUNTER: Incrementing counters that never decrease (these are not reset on each reading).\n - ABSOLUTE: Counters that do get reset upon reading.\n - GAUGE: E.g. a temperature value."
+    },
     "protobufAny": {
       "type": "object",
       "properties": {