[MODCLUSTER-408] Requests are not properly drained during undeploy

[aogburn]

https://issues.jboss.org/browse/MODCLUSTER-408

[modcluster-pull-request]

Triggering build using a merge of e0c2553 on branch 1.2.x:
Private: https://jenkins.mw.lab.eng.bos.redhat.com/hudson/job/mod_cluster-1.3.x-pull-player-executor/

[modcluster-pull-request]

Build 51 outcome was SUCCESS using a merge of e0c2553 on branch 1.2.x:
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Public: https://hudson.jboss.org/hudson/job/mod_cluster-1.3.x-pull-player-executor/51

[rhusar]

(Just noting that this will be also needed in master)

[modcluster-pull-request]

Triggering build using a merge of 13f0df7 on branch 1.2.x:
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[aogburn]

Thanks, @jfclere - Updated with your suggestions. Sorry for the wait.

[modcluster-pull-request]

Build 62 outcome was SUCCESS using a merge of 13f0df7 on branch 1.2.x:
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Public: https://hudson.jboss.org/hudson/job/mod_cluster-1.3.x-pull-player-executor/62