Allow custom server ports in the test suite (was: apache http library throws 'badurl' error while running Java SDK ant test against cluster on non-default port.)

This is part of multi-instance testing for customer 'A'.

Steps to reproduce:
1)Setup a 3 instances per physical machine. configure a cluster of 5 such instances. The instances are modified to run on non-default ports by modifying static config file. for example:

{rest_port,9000}

.

{mccouch_port,9001}

.

{memcached_port,12000}

.

{memcached_dedicated_port,12001}

.

{moxi_port,12002}

.

{short_name,"ns11"}

.

{ssl_rest_port,11000}

.

{ssl_capi_port,11001}

.

{ssl_proxy_downstream_port,11002}

.

{ssl_proxy_upstream_port,11003}

.

2)clone java SDK project. change the server ip address and server port number(internal memcached port) in the build.xml file to reflect the server address and non-default internal memcached port (12001 in this case).
example:sysproperty key="server.address_v6" value="${server.address_v6}"/>
<sysproperty key="server.port_number" value="12001"/>

3) the junit tests in the Java SDK contain hardcoded REST port, so modify all of them to non-default REST port:
find . -name "*.java" -print0 | xargs -0 sed -i '' -e 's/8091/9000/g'

4)Run 'ant test'. the ClusterManager tests fail with following apache http library error. the library methods are called from ClusterManager.java

2014-01-23 16:35:03.786 WARN com.couchbase.client.ClusterManager: Cluster Response failed with:
[junit] java.net.UnknownHostException: badurl
[junit] at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.validateAddress(DefaultConnectingIOReactor.java:245)
[junit] at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processSessionRequests(DefaultConnectingIOReactor.java:265)
[junit] at org.apache.http.impl.nio.reactor.DefaultConnectingIOReactor.processEvents(DefaultConnectingIOReactor.java:141)
[junit] at org.apache.http.impl.nio.reactor.AbstractMultiworkerIOReactor.execute(AbstractMultiworkerIOReactor.java:348)
[junit] at com.couchbase.client.ClusterManager$2.run(ClusterManager.java:589)
[junit] at java.lang.Thread.run(Thread.java:695)