Replace git.openstack.org with opendev.org

This patch replaces git.openstack.org with opendev.org as redirection
from old path was enabled.
Also we change upper constraints url due to [1]

[1] http://lists.openstack.org/pipermail/openstack-discuss/2019-May/006478.html

Change-Id: I837aefc043d91212b21ca3cb3d9851e3a33b358e

defaults/main.yml

@@ -74,9 +74,9 @@ magnum_venv_tag: "{{ venv_tag | default('untagged') }}"
 magnum_venv_path: "/openstack/venvs/magnum-{{ magnum_venv_tag }}"
 magnum_bin: "{{ magnum_venv_path }}/bin"
 
-magnum_git_repo: "https://git.openstack.org/openstack/magnum"
+magnum_git_repo: "https://opendev.org/openstack/magnum"
 magnum_git_install_branch: master
-magnum_upper_constraints_url: "{{ requirements_git_url | default('https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt?h=' ~ requirements_git_install_branch | default('master')) }}"
+magnum_upper_constraints_url: "{{ requirements_git_url | default('https://releases.openstack.org/constraints/upper/' ~ requirements_git_install_branch | default('master')) }}"
 magnum_git_constraints:
   - "git+{{ magnum_git_repo }}@{{ magnum_git_install_branch }}#egg=magnum"
   - "--constraint {{ magnum_upper_constraints_url }}"

releasenotes/source/conf.py

@@ -64,7 +64,7 @@ title = 'OpenStack-Ansible Release Notes: ' + role_name + 'role'
 
 # The link to the browsable source code (for the left hand menu)
 oslosphinx_cgit_link = (
-    "https://git.openstack.org/cgit/openstack/{}".format(target_name)
+    "https://opendev.org/openstack/{}".format(target_name)
 )
 
 # Release notes do not need a version number in the title, they

tests/os_magnum-overrides.yml

@@ -14,7 +14,7 @@ tempest_run: yes
 
 tempest_plugins:
   - name: magnum
-    repo: https://git.openstack.org/openstack/magnum-tempest-plugin
+    repo: https://opendev.org/openstack/magnum-tempest-plugin
     branch: master
 
 tempest_test_whitelist: