fix(bootstrap): respect --force-local option

Before this change, `--force-local` option was not respected and
monorepo-local packages outside of the defined --scope were still
installed from the npm registry.

This commit fixes the code handling `--force-local` logic, so that:
- Local packages are resolved as links within the monorepo
- The following warning IS NOT printed anymore:
  _Installing local packages that do not match filters from registry_

Signed-off-by: Miroslav Bajtoš <mbajtoss@gmail.com>

commands/bootstrap/__tests__/__snapshots__/bootstrap-command.test.js.snap

@@ -319,9 +319,6 @@ Object {
     "bar@^2.0.0",
     "foo@^1.0.0",
   ],
-  "packages/package-4": Array [
-    "package-3@^1.0.0",
-  ],
 }
 `;
 
@@ -332,6 +329,21 @@ Array [
     "dest": "packages/package-4/node_modules/@test/package-1",
     "type": "junction",
   },
+  Object {
+    "_src": "packages/package-3",
+    "dest": "packages/package-4/node_modules/package-3",
+    "type": "junction",
+  },
+  Object {
+    "_src": "packages/package-3/cli1.js",
+    "dest": "packages/package-4/node_modules/.bin/package3cli1",
+    "type": "exec",
+  },
+  Object {
+    "_src": "packages/package-3/cli2.js",
+    "dest": "packages/package-4/node_modules/.bin/package3cli2",
+    "type": "exec",
+  },
 ]
 `;
 

commands/bootstrap/index.js

@@ -161,7 +161,7 @@ class BootstrapCommand extends Command {
     chain = chain.then(filteredPackages => {
       this.filteredPackages = filteredPackages;
 
-      if (filteredPackages.length !== this.targetGraph.size) {
+      if (filteredPackages.length !== this.targetGraph.size && !this.options.forceLocal) {
         this.logger.warn("bootstrap", "Installing local packages that do not match filters from registry");
 
         // an explicit --scope, --ignore, or --since should only symlink the targeted packages, no others