Remove 'vnf_packages' key from vnf package list response

As per ETSI GS NFV-SOL 005 V2.4.1 (2018-02) table 9.4.2.3.2-2, GET Vnf
Packages should return list of all Vnf packages, but as per current
implemention this api is returning dictionory with resource name as key
i.e {'vnf_packages': [{vnf_package1}, {vnf_package2},...]}. Hence
removing the resource key and returning api response as a list.

As per process to fix this issue we need to provide micro version
support in tacker as well as in python-tackerclient for command.
The list api was part of VNF package api which released in train cycle.
But we can not instantiate, terminate and Heal VNF as these feature is
not released yet and about to release in U cycle. The changes we have
proposed will be useful after U release and that is why we think we
should do these change without micro version support.

Closes-bug: #1871054
Change-Id: I7f5105fc7a49f9d31fb32119c725dae0421cfde7

releasenotes/notes/bug-1871054-get-vnfpackages-response-d9211712cf419bef.yaml

@@ -0,0 +1,14 @@
+---
+fixes:
+  - |
+    Includes the fix for `bug 1871054`_ which as per
+    `ETSI GS NFV-SOL 005 V2.6.1`_ table 9.4.2.3.2-2 should return list of vnf
+    packages in ``list`` instead of ``dictionary`` for
+    ``GET /vnfpkgm/v1/vnf_packages`` API.
+
+    .. note:: Users should use python-tackerclient version >= 1.0.1 to list
+              vnf packages otherwise it would break as this change is not
+              backward compatible.
+
+    .. _ETSI GS NFV-SOL 005 V2.6.1: https://www.etsi.org/deliver/etsi_gs/NFV-SOL/001_099/005/02.06.01_60/gs_nfv-sol005v020601p.pdf
+    .. _bug 1871054 : https://bugs.launchpad.net/tacker/+bug/1871054

tacker/api/views/vnf_packages.py

@@ -118,5 +118,5 @@ class ViewBuilder(base.BaseViewBuilder):
 
             include_fields = set(self.FLATTEN_ATTRIBUTES.keys()) - \
                 exclude_fields
-        return {'vnf_packages': [self._get_vnf_package(vnf_package,
-            include_fields=include_fields)for vnf_package in vnf_packages]}
+        return [self._get_vnf_package(vnf_package,
+            include_fields=include_fields)for vnf_package in vnf_packages]

tacker/tests/functional/vnfpkgm/test_vnf_package.py

@@ -146,7 +146,7 @@ class VnfPackageTest(base.BaseTackerTest):
         resp, body = self.http_client.do_request(self.base_url, "GET")
         self.assertEqual(200, resp.status_code)
 
-        package_uuids = [obj['id'] for obj in body['vnf_packages']]
+        package_uuids = [obj['id'] for obj in body]
         self.assertIn(vnf_package_list[0], package_uuids)
         self.assertIn(vnf_package_list[1], package_uuids)
 
@@ -225,7 +225,7 @@ class VnfPackageTest(base.BaseTackerTest):
         package = deepcopy(self.package2)
         for attr in ['softwareImages', 'checksum', 'userDefinedData']:
             package.pop(attr, None)
-        expected_result = {'vnf_packages': [package]}
+        expected_result = [package]
         self.assertEqual(expected_result, body)
 
     def test_index_attribute_selector_all_fields(self):
@@ -243,7 +243,7 @@ class VnfPackageTest(base.BaseTackerTest):
             'all_fields': ''}
         filter_url = self.base_url + "?" + urllib.parse.urlencode(filter_expr)
         resp, body = self.http_client.do_request(filter_url, "GET")
-        expected_result = {'vnf_packages': [self.package1]}
+        expected_result = [self.package1]
         self.assertEqual(expected_result, body)
 
     def test_index_attribute_selector_exclude_default(self):
@@ -254,7 +254,7 @@ class VnfPackageTest(base.BaseTackerTest):
         package2 = deepcopy(self.package2)
         for attr in ['softwareImages', 'checksum', 'userDefinedData']:
             package2.pop(attr, None)
-        expected_result = {'vnf_packages': [package2]}
+        expected_result = [package2]
         self.assertEqual(expected_result, body)
 
     def test_index_attribute_selector_exclude_fields(self):
@@ -266,7 +266,7 @@ class VnfPackageTest(base.BaseTackerTest):
         for software_image in package2['softwareImages']:
             software_image.pop('checksum', None)
         package2.pop('checksum', None)
-        expected_result = {'vnf_packages': [package2]}
+        expected_result = [package2]
         self.assertEqual(expected_result, body)
 
     def test_index_attribute_selector_fields(self):
@@ -286,7 +286,7 @@ class VnfPackageTest(base.BaseTackerTest):
                     'version']:
                 software_image.pop(attr, None)
         package1.pop('checksum', None)
-        expected_result = {'vnf_packages': [package1]}
+        expected_result = [package1]
         self.assertEqual(expected_result, body)
 
     def _create_and_onboard_vnf_package(self, file_name=None):

tacker/tests/unit/vnfpkgm/fakes.py

@@ -78,9 +78,7 @@ VNFPACKAGE_RESPONSE = {
     }],
 }
 
-VNFPACKAGE_INDEX_RESPONSE = {
-    'vnf_packages': [VNFPACKAGE_RESPONSE]
-}
+VNFPACKAGE_INDEX_RESPONSE = [VNFPACKAGE_RESPONSE]
 
 
 def index_response(remove_attrs=None, vnf_package_updates=None):
@@ -94,7 +92,7 @@ def index_response(remove_attrs=None, vnf_package_updates=None):
         vnf_package.pop(attr, None)
     if vnf_package_updates:
         vnf_package.update(vnf_package_updates)
-    return {'vnf_packages': [vnf_package]}
+    return [vnf_package]
 
 
 def _fake_software_image(updates=None):