CAMEL-5539: Fix compilation problems

Fix typo as requested by Bilgin Ibryam <bibryam@apache.org>.

Signed-off-by: Gregor Zurowski <gregor@zurowski.org>
[CAMEL-6694] Adding INFO log about Loggers discovered in Registry
CAMEL-7141 Avoiding the sideeffect of setHeaderFilterStrategy of camel-netty-http component with thanks to Joe
CAMEL-7349 cach the schema in JaxbDataFormate
CAMEL-7349 polish the code as Claus suggested
upgrade to apache parent pom 14 and removed duplicated plugin dependency management definitions
upgrade slf4j from 1.7.6 to 1.7.7
CAMEL-7355 Moving HttpPollingConsumer to use HttpClient 4.3.x API
CAMEL-7353 fixed camel-http4 issue when the hostname stars with http with thanks to  Andreas
Fixed the CxfRsProducerTest with CXF 2.7.11 staging kit
Polish the camel-cxf test code to shutdown the spring application context when tearing down the test