refactor(@angular-devkit/schematics): allow use of a package manager's force option

This change allows consumers of the `NodeWorkflow` to configure the package installation task to use a package manager's `--force` option. This will be used by the `@angular/cli` update command when the update command's force option is used. This change is not intended to enable a schematic to adjust the force option.

(cherry picked from commit f7dc97f)

Author: clydin

goldens/public-api/angular_devkit/schematics/tools/index.d.ts

@@ -138,6 +138,7 @@ export interface NodeWorkflowOptions {
     force?: boolean;
     optionTransforms?: OptionTransform<object, object>[];
     packageManager?: string;
+    packageManagerForce?: boolean;
     packageRegistry?: string;
     registry?: schema.CoreSchemaRegistry;
     resolvePaths?: string[];

packages/angular_devkit/schematics/tasks/package-manager/executor.ts

@@ -104,6 +104,10 @@ export default function (
       args.push(`--registry="${factoryOptions.registry}"`);
     }
 
+    if (factoryOptions.force) {
+      args.push('--force');
+    }
+
     return new Observable((obs) => {
       const spinner = ora({
         text: `Installing packages (${taskPackageManagerName})...`,

packages/angular_devkit/schematics/tasks/package-manager/options.ts

@@ -13,6 +13,7 @@ export interface NodePackageTaskFactoryOptions {
   packageManager?: string;
   allowPackageManagerOverride?: boolean;
   registry?: string;
+  force?: boolean;
 }
 
 export interface NodePackageTaskOptions {

packages/angular_devkit/schematics/tools/workflow/node-workflow.ts

@@ -19,6 +19,7 @@ export interface NodeWorkflowOptions {
   force?: boolean;
   dryRun?: boolean;
   packageManager?: string;
+  packageManagerForce?: boolean;
   packageRegistry?: string;
   registry?: schema.CoreSchemaRegistry;
   resolvePaths?: string[];
@@ -60,6 +61,7 @@ export class NodeWorkflow extends workflow.BaseWorkflow {
     engineHost.registerTaskExecutor(BuiltinTaskExecutor.NodePackage, {
       allowPackageManagerOverride: true,
       packageManager: options.packageManager,
+      force: options.packageManagerForce,
       rootDirectory: root && getSystemPath(root),
       registry: options.packageRegistry,
     });