FAB-4454 Fix issue with fabric_ca logging

. Fixed minor misconfiguration in log4j.properties

Change-Id: Iafd55367b94be54d87079caf3ea041bbb0c142a4
Signed-off-by: Chris Murphy <chrism@fast.au.fujitsu.com>

Author: chrism28282828

src/test/resources/log4j.properties

@@ -17,4 +17,4 @@ log4j.appender.stdout.layout=org.apache.log4j.EnhancedPatternLayout
 log4j.appender.stdout.layout.ConversionPattern=%d{ISO8601}{GMT} %-5p %c{1}:%L - %m%n
 
 log4j.category.org.hyperledger.fabric=DEBUG
-log4j.category.org.hyperledger.fabric_ca.sdk=INFO
+log4j.category.org.hyperledger.fabric_ca=INFO