(PE-14934) Test if puppetdb is up when running puppet agent on pdb node

Before this commit we were running into an issue where puppetdb would
sometimes not be up and running after puppet agent restarted the
service. This commit waits for the puppetdb service to be up after
running puppet agent on the database node so that the next agent run
doesn't fail.

lib/beaker-pe/install/pe_utils.rb

@@ -473,7 +473,15 @@ def do_install hosts, opts = {}
 
             # Now that all hosts are in the dashbaord, run puppet one more
             # time to configure mcollective
-            on install_hosts, puppet_agent('-t'), :acceptable_exit_codes => [0,2]
+            install_hosts.each do |host|
+              on host, puppet_agent('-t'), :acceptable_exit_codes => [0,2]
+              # To work around PE-14318 if we just ran puppet agent on the
+              # database node we will need to wait until puppetdb is up and
+              # running before continuing
+              if host == database
+                sleep_until_puppetdb_started(database)
+              end
+            end
           end
         end