Changes "TLS" to "GRPCUseTLS" since it only applies to GRPC checks.

agent/agent.go

@@ -1766,7 +1766,7 @@ func (a *Agent) AddCheck(check *structs.HealthCheck, chkType *structs.CheckType,
 			}
 
 			var tlsClientConfig *tls.Config
-			if chkType.TLS {
+			if chkType.GRPCUseTLS {
 				var err error
 				tlsClientConfig, err = a.setupTLSClientConfig(chkType.TLSSkipVerify)
 				if err != nil {

agent/config/builder.go

@@ -946,7 +946,7 @@ func (b *Builder) checkVal(v *CheckDefinition) *structs.CheckDefinition {
 		DockerContainerID: b.stringVal(v.DockerContainerID),
 		Shell:             b.stringVal(v.Shell),
 		GRPC:              b.stringVal(v.GRPC),
-		TLS:               b.boolVal(v.TLS),
+		GRPCUseTLS:        b.boolVal(v.GRPCUseTLS),
 		TLSSkipVerify:     b.boolVal(v.TLSSkipVerify),
 		Timeout:           b.durationVal(fmt.Sprintf("check[%s].timeout", id), v.Timeout),
 		TTL:               b.durationVal(fmt.Sprintf("check[%s].ttl", id), v.TTL),

agent/config/config.go

@@ -342,7 +342,7 @@ type CheckDefinition struct {
 	DockerContainerID              *string             `json:"docker_container_id,omitempty" hcl:"docker_container_id" mapstructure:"docker_container_id"`
 	Shell                          *string             `json:"shell,omitempty" hcl:"shell" mapstructure:"shell"`
 	GRPC                           *string             `json:"grpc,omitempty" hcl:"grpc" mapstructure:"grpc"`
-	TLS                            *bool               `json:"tls,omitempty" hcl:"tls" mapstructure:"tls"`
+	GRPCUseTLS                     *bool               `json:"grpc_use_tls,omitempty" hcl:"grpc_use_tls" mapstructure:"grpc_use_tls"`
 	TLSSkipVerify                  *bool               `json:"tls_skip_verify,omitempty" hcl:"tls_skip_verify" mapstructure:"tls_skip_verify"`
 	Timeout                        *string             `json:"timeout,omitempty" hcl:"timeout" mapstructure:"timeout"`
 	TTL                            *string             `json:"ttl,omitempty" hcl:"ttl" mapstructure:"ttl"`

agent/config/runtime_test.go

@@ -1868,14 +1868,14 @@ func TestConfigFlagsAndEdgecases(t *testing.T) {
 				`-data-dir=` + dataDir,
 			},
 			json: []string{
-				`{ "check": { "name": "a", "grpc": "localhost:12345/foo" } }`,
+				`{ "check": { "name": "a", "grpc": "localhost:12345/foo", "grpc_use_tls": true } }`,
 			},
 			hcl: []string{
-				`check = { name = "a" grpc = "localhost:12345/foo" }`,
+				`check = { name = "a" grpc = "localhost:12345/foo", grpc_use_tls = true }`,
 			},
 			patch: func(rt *RuntimeConfig) {
 				rt.Checks = []*structs.CheckDefinition{
-					&structs.CheckDefinition{Name: "a", GRPC: "localhost:12345/foo"},
+					&structs.CheckDefinition{Name: "a", GRPC: "localhost:12345/foo", GRPCUseTLS: true},
 				}
 				rt.DataDir = dataDir
 			},
@@ -3906,6 +3906,7 @@ func TestSanitize(t *testing.T) {
             "DeregisterCriticalServiceAfter": "0s",
             "DockerContainerID": "",
             "GRPC": "",
+            "GRPCUseTLS": false,
             "HTTP": "",
             "Header": {},
             "ID": "",
@@ -3919,7 +3920,6 @@ func TestSanitize(t *testing.T) {
             "Shell": "",
             "Status": "",
             "TCP": "",
-            "TLS": false,
             "TLSSkipVerify": false,
             "TTL": "0s",
             "Timeout": "0s",
@@ -4037,6 +4037,7 @@ func TestSanitize(t *testing.T) {
                 "DeregisterCriticalServiceAfter": "0s",
                 "DockerContainerID": "",
                 "GRPC": "",
+                "GRPCUseTLS": false,
                 "HTTP": "",
                 "Header": {},
                 "Interval": "0s",
@@ -4048,7 +4049,6 @@ func TestSanitize(t *testing.T) {
                 "Shell": "",
                 "Status": "",
                 "TCP": "",
-                "TLS": false,
                 "TLSSkipVerify": false,
                 "TTL": "0s",
                 "Timeout": "0s"

agent/structs/check_definition.go

@@ -31,7 +31,7 @@ type CheckDefinition struct {
 	DockerContainerID              string
 	Shell                          string
 	GRPC                           string
-	TLS                            bool
+	GRPCUseTLS                     bool
 	TLSSkipVerify                  bool
 	Timeout                        time.Duration
 	TTL                            time.Duration
@@ -67,13 +67,13 @@ func (c *CheckDefinition) CheckType() *CheckType {
 		ScriptArgs:        c.ScriptArgs,
 		HTTP:              c.HTTP,
 		GRPC:              c.GRPC,
+		GRPCUseTLS:        c.GRPCUseTLS,
 		Header:            c.Header,
 		Method:            c.Method,
 		TCP:               c.TCP,
 		Interval:          c.Interval,
 		DockerContainerID: c.DockerContainerID,
 		Shell:             c.Shell,
-		TLS:               c.TLS,
 		TLSSkipVerify:     c.TLSSkipVerify,
 		Timeout:           c.Timeout,
 		TTL:               c.TTL,

agent/structs/check_type.go

@@ -35,7 +35,7 @@ type CheckType struct {
 	DockerContainerID string
 	Shell             string
 	GRPC              string
-	TLS               bool
+	GRPCUseTLS        bool
 	TLSSkipVerify     bool
 	Timeout           time.Duration
 	TTL               time.Duration