feat(AWS Deploy): Introduce warning about deploy -f alias

lib/cli/handle-error.js

@@ -98,7 +98,7 @@ module.exports = async (exception, options = {}) => {
           // It can happen e.g. during "plugin uninstall" command, where "serverless" originally
           // installed a as peer dependency was removed
           logWarning('Could not resolve path to locally installed error handler');
-          log.warning('Could not resolve path to locally installed error handler');
+          log.debug('Could not resolve path to locally installed error handler');
           return null;
         }
       }

lib/plugins/deploy.js

@@ -2,6 +2,8 @@
 
 const ServerlessError = require('../serverless-error');
 const cliCommandsSchema = require('../cli/commands-schema');
+const { logWarning } = require('../classes/Error');
+const { log } = require('@serverless/utils/log');
 
 class Deploy {
   constructor(serverless, options) {
@@ -29,6 +31,19 @@ class Deploy {
     };
 
     this.hooks = {
+      'initialize': () => {
+        if (
+          this.serverless.processedInput.commands.join(' ') === 'deploy' &&
+          this.options.function
+        ) {
+          logWarning(
+            'Please use "deploy function -f" command directly. Support for "deploy -f" alias is likely to be removed in the future.'
+          );
+          log.warning(
+            'Please use "deploy function -f" command directly. Support for "deploy -f" alias is likely to be removed in the future.'
+          );
+        }
+      },
       'before:deploy:deploy': async () => {
         const provider = this.serverless.service.provider.name;
         if (!this.serverless.getProvider(provider)) {