Deprecate the chain command

This patch deprecate the chain command and
it's subcommands payload and signature

Signed-off-by: Shiv Verma <shverma@redhat.com>

Author: pratap0007

docs/cmd/tkn.md

@@ -21,7 +21,6 @@ CLI for tekton pipelines
 ### SEE ALSO
 
 * [tkn bundle](tkn_bundle.md)	 - Manage Tekton Bundles
-* [tkn chain](tkn_chain.md)	 - Manage Chains
 * [tkn clustertriggerbinding](tkn_clustertriggerbinding.md)	 - Manage ClusterTriggerBindings
 * [tkn completion](tkn_completion.md)	 - Prints shell completion scripts
 * [tkn customrun](tkn_customrun.md)	 - Manage CustomRuns

docs/man/man1/tkn.1

@@ -26,4 +26,4 @@ CLI for tekton pipelines
 
 .SH SEE ALSO
 .PP
-\fBtkn\-bundle(1)\fP, \fBtkn\-chain(1)\fP, \fBtkn\-clustertriggerbinding(1)\fP, \fBtkn\-completion(1)\fP, \fBtkn\-customrun(1)\fP, \fBtkn\-eventlistener(1)\fP, \fBtkn\-hub(1)\fP, \fBtkn\-pipeline(1)\fP, \fBtkn\-pipelinerun(1)\fP, \fBtkn\-task(1)\fP, \fBtkn\-taskrun(1)\fP, \fBtkn\-triggerbinding(1)\fP, \fBtkn\-triggertemplate(1)\fP, \fBtkn\-version(1)\fP
+\fBtkn\-bundle(1)\fP, \fBtkn\-clustertriggerbinding(1)\fP, \fBtkn\-completion(1)\fP, \fBtkn\-customrun(1)\fP, \fBtkn\-eventlistener(1)\fP, \fBtkn\-hub(1)\fP, \fBtkn\-pipeline(1)\fP, \fBtkn\-pipelinerun(1)\fP, \fBtkn\-task(1)\fP, \fBtkn\-taskrun(1)\fP, \fBtkn\-triggerbinding(1)\fP, \fBtkn\-triggertemplate(1)\fP, \fBtkn\-version(1)\fP

pkg/cmd/chain/chain.go

@@ -47,5 +47,6 @@ func Command(p cli.Params) *cobra.Command {
 		payloadCommand(p),
 		signatureCommand(p),
 	)
+	cmd.Deprecated = "The Chain command is deprecated and will be removed in future releases."
 	return cmd
 }

pkg/cmd/chain/payload.go

@@ -69,6 +69,7 @@ func payloadCommand(p cli.Params) *cobra.Command {
 		},
 	}
 	c.Flags().BoolVarP(&opts.SkipVerify, "skip-verify", "S", opts.SkipVerify, "Skip verifying the payload'signature")
+	c.Deprecated = "The Chain command is deprecated and will be removed in future releases."
 
 	return c
 }

pkg/cmd/chain/signature.go

@@ -58,6 +58,7 @@ func signatureCommand(p cli.Params) *cobra.Command {
 			return printSignatures(cs, chainsNamespace, taskrun)
 		},
 	}
+	c.Deprecated = "The Chain command is deprecated and will be removed in future releases."
 
 	return c
 }