Fix YCSB build issues for deprecated mapr repo url

[ERROR] Failed to execute goal on project maprdb-binding: Could not resolve dependencies for project site.ycsb:maprdb-binding:jar:0.17.0: Failed to collect dependencies at org.apache.hbase:hbase-client:jar:1.1.8-mapr-1710: Failed to read artifact descriptor for org.apache.hbase:hbase-client:jar:1.1.8-mapr-1710: Could not transfer artifact org.apache.hbase:hbase-client:pom:1.1.8-mapr-1710 from/to mapr-releases (http://repository.mapr.com/maven/): Transfer failed for http://repository.mapr.com/maven/org/apache/hbase/hbase-client/1.1.8-mapr-1710/hbase-client-1.1.8-mapr-1710.pom 500 Proxy Error -> [Help 1]