Release tosca-parser for Zed-1 milestone

This is a library release for tosca-parser for the Zed-1
milestone. This repository contains commits that have not been releases
for this cycle yet.

If the team is ready to process with this release, please leave a +1
to indicate we should go ahead with the release.

If the team needs more time for things about to merge, or if there is
some other reason a release should not be done at this time, please
leave a -1 with a comment indicating the status. Then update the patch
with the new commit hash to use once the team is ready to do the
release.

$ git log --oneline --no-merges 2.5.1..88796c0
88796c0 Drop lower-constraints.txt and its testing
46141f9 Fix KeyError in get_attribute function
4533792 Fix InvalidTypeError in get_attribute function
c63e17a Add Python3 zed unit tests

Signed-off-by: Hervé Beraud <hberaud@redhat.com>
Change-Id: Ic1790be0a5278364c89ca020608cba6af02de5e1

deliverables/zed/tosca-parser.yaml

@@ -6,3 +6,8 @@ team: heat
 type: library
 repository-settings:
   openstack/tosca-parser: {}
+releases:
+  - version: 2.6.0
+    projects:
+      - repo: openstack/tosca-parser
+        hash: 88796c0072ce2d217c1eca49b512d2ee8cbbc08c