(chore) Cleaned up log messages

[orpiske]

Another set of logging cleanups for after we cut the release

• replaced concatenations with log markers
• removed unnecessary debugging guards

Components: camel-influxdb, camel-jaxb, camel-jcr, camel-jetty-common, camel-jgroups
camel-jms, camel-jmx, camel-jpa, camel-leveldb camel-mail, camel-mock,
camel-salesforce, camel-rabbitmq, camel-quartz, camel-itest-cdi, camel-sjms,
camel-base

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