call dropdb --force to drop databases even if there are connections

this is a new flag since PostgreSQL 13, which attempts to "terminate
all existing connections to the target database before dropping it"

Author: evgeni

spec/support/acceptance/purge.rb

@@ -10,5 +10,5 @@ def purge_foreman
 
   apache_service_name = ['debian', 'ubuntu'].include?(os[:family]) ? 'apache2' : 'httpd'
   on default, "systemctl stop #{apache_service_name} dynflow-sidekiq@* foreman foreman-proxy", { :acceptable_exit_codes => [0, 5] }
-  on default, 'runuser - postgres -c "dropdb foreman"', { :acceptable_exit_codes => [0, 1, 127] }
+  on default, 'runuser - postgres -c "dropdb --force foreman"', { :acceptable_exit_codes => [0, 1, 127] }
 end