Log4J2LoggingSystem.FILTER causes some exceptions to be lost from the log

[shalom938]

Log4J2LoggingSystem.beforeInitialize installs a log4j2 filter that denies all, and removes the filter in initialize method.
if there is a multi profile yaml that contains a typo the application fails and the exception is not logged.
In this case its ConfigFileApplicationListener that fails while the filter is installed, if another listener will fail then its exception will be lost too.

to recreate run sample.actuator.log4j2.SampleActuatorLog4J2Application with this application.yml:

---
spring:
    profiles:
         active: local

---
spring:
    profiles: local
a=test

[shalom938]

BTW, if there is the same typo in a yaml file but not in a profile then nothing fails and the property does not exist. maybe loading of the yaml property source should fail.

[snicoll]

See #2125