MB-47445: Add to deployed apps if function state is paused

When eventing producer crashes all the in-memory state of
a function is lost. So paused handler won't be added
to deployed apps. This will keep the state of paused app as
pausing. This patch will add it to deployed apps and deployment of
paused handler will be done lazily

Backport of MB-44335

Change-Id: I2edd55fbf0308e890955fde140996e0e8727f8ed
Reviewed-on: http://review.couchbase.org/c/eventing/+/146510
Reviewed-by: Jeelan Basha Poola <jeelan.poola@couchbase.com>
Reviewed-by: CI Bot
Tested-by: <ankit.prabhu@couchbase.com>
(cherry picked from commit 1a57b4a)
Reviewed-on: http://review.couchbase.org/c/eventing/+/157500
Well-Formed: Restriction Checker
Reviewed-by: <abhishek.jindal@couchbase.com>

supervisor/super_supervisor.go

@@ -345,6 +345,15 @@ func (s *SuperSupervisor) SettingsChangeCallback(path string, value []byte, rev
 					delete(s.pausingApps, appName)
 					s.appListRWMutex.Unlock()
 					logging.Infof("%s [%d] Function: %s pausing done", logPrefix, s.runningFnsCount(), appName)
+				} else {
+					// This can happen if eventing producer crashed and respawned
+					// Spawning of the producer happens lazily when user deploy this function
+					s.appRWMutex.Lock()
+					s.appDeploymentStatus[appName] = deploymentStatus
+					s.appProcessingStatus[appName] = processingStatus
+					s.appRWMutex.Unlock()
+					s.addToDeployedApps(appName)
+					s.addToLocallyDeployedApps(appName)
 				}
 			}