feat(@angular/cli): allow override of configuration for ng run

closes #10569

Author: Manduro

packages/@angular/cli/commands/run.ts

@@ -16,9 +16,13 @@ export default class RunCommand extends ArchitectCommand {
 
   public async run(options: RunOptions) {
     if (options.target) {
-      const [project, target, configuration] = options.target.split(':');
+      let [project, target, configuration] = options.target.split(':');
       const overrides = { ...options };
       delete overrides.target;
+      if (overrides.configuration) {
+        configuration = overrides.configuration;
+        delete overrides.configuration;
+      }
       return this.runArchitectTarget({
         project,
         target,