Remove reviewdb config from Gerrit

This should only land once we are on Gerrit 3.x and happy with it. But
at this point the mysql reviewdb will not be used anymore and config for
it can be removed. We keep general mysql things like tools and backups
in place as the accountPatchReviewDb continues to live in MySQL.

This also comments out calls to jeepyb's welcome-message,
update-blueprint and update-bug entrypoints from the patchset-created
event hook, since they rely on database connections for the moment.
Calls to update-bug in change-abandoned and change-merged event
hooks are retained as those code paths don't rely on database
interaction nor attempt to load the removed configuration.

Change-Id: I6e24dbb223fd3f76954db3dd74a03887cf2e2a8b

playbooks/roles/gerrit/files/hooks/patchset-created

@@ -7,11 +7,12 @@ export PROJECTS_YAML=/var/gerrit/etc/projects.yaml
 export PROJECTS_INI=/var/gerrit/etc/projects.ini
 
 # Use timeout to kill any process running longer than 10 minutes.
-timeout -k 2m 10m /usr/local/bin/update-blueprint patchset-created "$@"
-timeout -k 2m 10m /usr/local/bin/update-bug patchset-created "$@"
 timeout -k 2m 10m /usr/local/bin/notify-impact patchset-created "$@" --impact SecurityImpact --dest-address 'openstack-security@lists.openstack.org'
-if [ -f /var/gerrit/etc/ssh_welcome_rsa_key ] ; then
-timeout -k 2m 10m /usr/local/bin/welcome-message patchset-created \
-    --verbose --ssh-user=welcome-message \
-    --ssh-key=/var/gerrit/etc/ssh_welcome_rsa_key "$@"
-fi
+# TODO: reenable these once jeepyb no longer relies on the old Gerrit DB
+#timeout -k 2m 10m /usr/local/bin/update-blueprint patchset-created "$@"
+#timeout -k 2m 10m /usr/local/bin/update-bug patchset-created "$@"
+#if [ -f /var/gerrit/etc/ssh_welcome_rsa_key ] ; then
+#timeout -k 2m 10m /usr/local/bin/welcome-message patchset-created \
+#    --verbose --ssh-user=welcome-message \
+#    --ssh-key=/var/gerrit/etc/ssh_welcome_rsa_key "$@"
+#fi

playbooks/roles/gerrit/templates/gerrit.config

@@ -9,19 +9,6 @@
 	reportBugUrl = https://docs.openstack.org/infra/system-config/project.html#contributing
 	gitHttpUrl = https://{{ gerrit_vhost_name }}/
 	serverId = {{ gerrit_serverid }}
-[database]
-{% if gerrit_database_type == 'MYSQL' %}
-	type = MYSQL
-	hostname = {{ gerrit_mysql_host }}
-	database = reviewdb
-	username = gerrit2
-	url = jdbc:mysql://{{ gerrit_mysql_host }}/reviewdb?characterSetResults=utf8&characterEncoding=utf8&connectionCollation=utf8_bin&useUnicode=yes
-	poolLimit = 225
-	connectionpool = true
-{% else %}
-	type = h2
-	database = tmp/reviewDb
-{% endif %}
 [auth]
 	contributorAgreements = true
 	type = OPENID_SSO

playbooks/roles/gerrit/templates/secure.config

@@ -1,6 +1,4 @@
 {% if gerrit_database_type == 'MYSQL' %}
-[database]
-	password = {{ gerrit_mysql_password }}
 [accountPatchReviewDb]
 	url = jdbc:mysql://{{ gerrit_mysql_host }}:3306/accountPatchReviewDb?characterSetResults=utf8&characterEncoding=utf8&connectionCollation=utf8_bin&useUnicode=yes&user=gerrit2&password={{ gerrit_mysql_password }}
 {% endif %}

playbooks/zuul/templates/group_vars/review-dev.yaml.j2

@@ -91,6 +91,6 @@ gerrit_run_init: true
 gerrit_dev_storyboard_token: 4020000c-d1b9-4173-ab33-2f55dbc1c718
 gerrit_dev_email_private_key: xxj2lTapostsobbxvpawhjhnzufaGxchrypoddcafqarrq5h
 # These are here so that interpolation works in the main playbook. They
-# are not actually used in the gerrit config.
+# are not directly used in the gerrit config.
 gerrit_dev_mysql_host: unused
 gerrit_dev_mysql_password: unused