Secondary bidders by Lightwood13 · Pull Request #4331 · prebid/prebid-server-java

@Lightwood13

# Conflicts:
#	src/main/java/org/prebid/server/auction/ExchangeService.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestCleaner.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestCurrencyBlocker.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestMediaFilter.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestPostProcessor.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestPreferredMediaProcessor.java
#	src/main/java/org/prebid/server/auction/bidderrequestpostprocessor/CompositeBidderRequestPostProcessor.java
#	src/main/java/org/prebid/server/spring/config/ServiceConfiguration.java
#	src/test/java/org/prebid/server/auction/ExchangeServiceTest.java
#	src/test/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestCurrencyBlockerTest.java
#	src/test/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestMediaFilterTest.java
#	src/test/java/org/prebid/server/auction/bidderrequestpostprocessor/BidderRequestPreferredMediaProcessorTest.java
#	src/test/java/org/prebid/server/auction/bidderrequestpostprocessor/CompositeBidderRequestPostProcessorTest.java