otk: add mtls into resolve ostree command

cmd/otk/osbuild-resolve-ostree-commit/main.go

@@ -27,6 +27,16 @@ type Input struct {
 
 	// Whether to use RHSM secrets when resolving and fetching the commit.
 	RHSM bool `json:"rhsm,omitempty"`
+
+	// MTLS information. Will be ignored if RHSM is set.
+	MTLS *struct {
+		CA         string `json:"ca"`
+		ClientCert string `json:"client_cert"`
+		ClientKey  string `json:"client_key"`
+	} `json:"mtls,omitempty"`
+
+	// HTTP proxy to use when fetching the ref.
+	Proxy string `json:"proxy,omitempty"`
 }
 
 // Output contains everything needed to write a manifest that requires pulling
@@ -53,6 +63,12 @@ func run(r io.Reader, w io.Writer) error {
 		URL:  inputTree.Tree.URL,
 		Ref:  inputTree.Tree.Ref,
 		RHSM: inputTree.Tree.RHSM,
+		MTLS: &ostree.MTLS{
+			CA:         inputTree.Tree.MTLS.CA,
+			ClientCert: inputTree.Tree.MTLS.ClientCert,
+			ClientKey:  inputTree.Tree.MTLS.ClientKey,
+		},
+		Proxy: inputTree.Tree.Proxy,
 	}
 
 	var commitSpec ostree.CommitSpec