Use non-absolute url, when composing repository urls

This commit changes urls in the path of the to_url to be non-absolute,
to allow urlparse lib concatenate path and MURANO_REPO_URL with
a non-empty path component correctly.

Change-Id: I4fd2b1001e05de79b0d1813790f7c61518f1a90f
Closes-Bug: #1503593

muranodashboard/packages/views.py

@@ -196,7 +196,7 @@ class ImportBundleWizard(views.ModalFormMixin,
             elif import_type == 'by_name':
                 f = muranoclient_utils.to_url(
                     form.cleaned_data['name'],
-                    path='/bundles/',
+                    path='bundles/',
                     base_url=base_url,
                     extension='.bundle',
                 )
@@ -405,7 +405,7 @@ class ImportPackageWizard(views.ModalFormMixin,
                 version = form.cleaned_data['repo_version']
                 f = muranoclient_utils.to_url(
                     name, version=version,
-                    path='/apps/',
+                    path='apps/',
                     extension='.zip',
                     base_url=base_url,
                 )