SHDP-359 Downgrading Spring 4.1.x to RC1 due to failing test

- see https://build.spring.io/browse/SPRINGDATAHADOOP-MASTER-JOB1-763/test/case/155724097

Author: Thomas Risberg

gradle.properties

@@ -57,7 +57,7 @@ defaultPigVersion = 0.10.1
 defaultHbaseVersion = 0.94.11
 
 ## Common libraries
-springVersion = 4.1.0.RC2
+springVersion = 4.1.0.RC1
 springBatchVersion = 3.0.1.RELEASE
 springBootVersion = 1.1.0.RELEASE
 springIntVersion = 4.0.3.RELEASE