MAGETWO-61778: Implement config:set command

Author: shiftedreality

app/code/Magento/Config/Console/Command/ConfigSetCommand.php

@@ -123,7 +123,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
                 ? $this->configSetProcessorFactory->create(ConfigSetProcessorFactory::TYPE_LOCK)
                 : $this->configSetProcessorFactory->create(ConfigSetProcessorFactory::TYPE_DEFAULT);
             $message = $input->getOption(static::OPTION_LOCK)
-                ? 'Value was locked.'
+                ? 'Value was saved and locked.'
                 : 'Value was saved.';
 
             // The processing flow depends on --lock option.

dev/tests/integration/testsuite/Magento/Config/Console/Command/ConfigSetCommandTest.php

@@ -207,8 +207,8 @@ public function testRunLock($path, $value, $scope = ScopeConfigInterface::SCOPE_
         $this->outputMock->expects($this->exactly(2))
             ->method('writeln')
             ->withConsecutive(
-                ['<info>Value was locked.</info>'],
-                ['<info>Value was locked.</info>']
+                ['<info>Value was saved and locked.</info>'],
+                ['<info>Value was saved and locked.</info>']
             );
 
         /** @var ConfigSetCommand $command */
@@ -276,8 +276,8 @@ public function testRunExtended(
         );
         $this->assertSame(null, $this->arrayManager->get($configPath, $this->loadConfig()));
 
-        $this->runCommand($arguments, $optionsLock, '<info>Value was locked.</info>');
-        $this->runCommand($arguments, $optionsLock, '<info>Value was locked.</info>');
+        $this->runCommand($arguments, $optionsLock, '<info>Value was saved and locked.</info>');
+        $this->runCommand($arguments, $optionsLock, '<info>Value was saved and locked.</info>');
 
         $this->assertSame($value, $this->arrayManager->get($configPath, $this->loadConfig()));
     }