[stable-1] Add OC, hashi_vault and Google removal announcements

changelogs/fragments/google-migration.yml

@@ -0,0 +1,10 @@
+major_changes:
+- |
+  For community.general 2.0.0, the Google modules will be moved to the `community.google <https://galaxy.ansible.com/community/google>`_ collection.
+  A redirection will be inserted so that users using ansible-base 2.10 or newer do not have to change anything.
+
+  If you use Ansible 2.9 and explicitly use Google modules from this collection, you will need to adjust your playbooks and roles to use FQCNs starting with ``community.google.`` instead of ``community.general.``,
+  for example replace ``community.general.gcpubsub`` in a task by ``community.google.gcpubsub``.
+
+  If you use ansible-base and installed ``community.general`` manually and rely on the Google modules, you have to make sure to install the ``community.google`` collection as well.
+  If you are using FQCNs, for example ``community.general.gcpubsub`` instead of ``gcpubsub``, it will continue working, but we still recommend to adjust the FQCNs as well.

changelogs/fragments/hashi_vault-migration.yml

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+major_changes:
+- |
+  For community.general 2.0.0, the hashi_vault lookup plugin will be moved to the `community.hashi_vault <https://galaxy.ansible.com/community/hashi_vault>`_ collection.
+  A redirection will be inserted so that users using ansible-base 2.10 or newer do not have to change anything.
+
+  If you use Ansible 2.9 and explicitly use hashi_vault lookup plugin from this collection, you will need to adjust your playbooks and roles to use FQCNs ``community.hashi_vault.hashi_vault`` instead of ``community.general.hashi_vault``.
+
+  If you use ansible-base and installed ``community.general`` manually and rely on the hashi_vault lookup plugin, you have to make sure to install the ``community.hashi_vault`` collection as well.
+  If you are using FQCNs, in other words ``community.general.hashi_vault`` instead of ``hashi_vault``, it will continue working, but we still recommend to adjust this FQCN as well.

changelogs/fragments/oc-migration.yml

@@ -0,0 +1,9 @@
+major_changes:
+- |
+  For community.general 2.0.0, the OC connection plugin will be moved to the `community.okd <https://galaxy.ansible.com/community/okd>`_ collection.
+  A redirection will be inserted so that users using ansible-base 2.10 or newer do not have to change anything.
+
+  If you use Ansible 2.9 and explicitly use OC connection plugin from this collection, you will need to adjust your playbooks and roles to use FQCNs ``community.okd.oc`` instead of ``community.general.oc``.
+
+  If you use ansible-base and installed ``community.general`` manually and rely on the OC connection plugin, you have to make sure to install the ``community.okd`` collection as well.
+  If you are using FQCNs, in other words ``community.general.oc`` instead of ``oc``, it will continue working, but we still recommend to adjust this FQCN as well.