Issue: LDAP configuration error while upgrading to Deploy 10.1.x and later

Issue

When upgrading to Deploy 10.1.x and later, with LDAP configured, the upgrade might fail and you might see the following error in the log:

2022-02-16 09:21:40.793 [main] {} WARN o.eclipse.jetty.webapp.WebAppContext - Failed startup of
   context o.s.b.w.e.j.JettyEmbeddedWebAppContext@321f25ed{application,/,file:///opt/xebialabs/
   xl-deploy-server/,UNAVAILABLE}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'spring
   SecurityFilterChain' defined in class path resource [org/springframework/security/config/
   annotation/web/configuration/WebSecurityConfiguration.class]: Bean instantiation via factory
   method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed
   to instantiate [javax.servlet.Filter]: Factory method 'springSecurityFilterChain' threw
   exception; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException:
No qualifying bean of type 'org.springframework.security.authentication.AuthenticationEvent
   Publisher' available: expected single matching bean but found 2: org.springframework.security.
   authentication.DefaultAuthenticationEventPublisher#0,org.springframework.security.authentication.
   DefaultAuthenticationEventPublisher#1

Cause

There was a change to the way LDAP should be configured starting with Deploy 10.1.x, hence the error above.

Workaround/Resolution Action

To overcome the error, follow the instructions available at https://docs.xebialabs.com/xl-deploy/10.1.x/releasemanual.html#digitalai-deploy-1010-new-features under the LDAP integration section.