Remove bail out behavior if one of the entrypoints does not exist

For lookupStrategy "multipleIdOrName", we should not bail out if one
of the provided entrypoints does not exist. Instead we should just
exlcude this invalid point.

lib/runner/extract-runnable-items.js

@@ -195,14 +195,6 @@ var sdk = require('postman-collection'),
             });
         }
 
-        // at this point of time, we should have traversed all items mentioned in entrypoint and created a linear
-        // subset of items. However, if post that, we still have items remaining in lookup object, that implies that
-        // extra items were present in user input and corresponding items for those do not exist in collection. As such
-        // we need to bail out if any of the given entry-point is not found.
-        if (Object.keys(entrypointLookup).length) {
-            return callback(null, []);
-        }
-
         // extract runnable items from the searched items.
         for (i = 0, ii = items.members.length; i < ii; i++) {
             runnableItems = runnableItems.concat(flattenNode(items.members[i]));

test/unit/extract-runnable-items.test.js

@@ -275,16 +275,16 @@ describe('extractRunnableItems', function () {
             );
         });
 
-        it('should bail out if any of the given entrypoint is not found. ', function (done) {
+        it('should exclude non-existent entry points and return only valid items', function (done) {
             extractRunnableItems(
                 collection, {
-                    execute: ['ID3', 'RANDOM'],
+                    execute: ['RANDOM', 'F1.R1', 'F2.R1'],
                     lookupStrategy: 'multipleIdOrName'
                 },
                 function (err, runnableItems, entrypoint) {
                     expect(err).to.be.null;
-                    expect(runnableItems).to.eql([]);
-                    expect(entrypoint).to.be.undefined;
+                    expect(_.map(runnableItems, 'name')).to.eql(['F1.R1', 'F2.R1']);
+                    expect(entrypoint).to.have.property('name', 'Collection C1');
                     done();
                 }
             );