Revert "fixed some sonar issue: Empty If Stmt"

This reverts commit 949d5b800338b764bb57e91c89bd514832e0e024.
Polished README.txt
Fixed the CS error of tooling module
Fix some other CS errors
Fix checkstyle error in camel-test-blueprint
upgrade commons httpclient and httpcore
CAMEL-6344: camel-bean-validator. Upgrade to latest release and use the JAR as is for OSGi as its bundle now.
CAMEL-6328: SimpleBuilder should create predicate and expressions the same way, and support property placeholders.
CAMEL-6340: Added cache for compiled groovy scripts to speedy performance. Thanks to Antoine DESSAIGNE for the patch.
Fixed the CS errors
CAMEL-6346 supports to set the ConfigAdmin persistent information to the camel blueprint main
CAMEL-6346 polish the options and fix the build error
Polished tests
Fixed potential NPE
CAMEL-6327: More work on new camel-netty-http component.
CAMEL-6327: More work on new camel-netty-http component.
Verifying my EGit settings.
CAMEL-6327: More work on new camel-netty-http component.
Upgraded to Spring WS 2.1.3
CAMEL-6341 fix the issue that DefaultShutdownStrategy never shutdown if the timeout is 0.