Made the Mesos - Jenkins slaves configurable with multiple slaveInfo.
Each slaveInfo can hold Jenkins-label name and its own slave
configuration(CPU,MEM etc).
Mesos plugin will provision slave based on the Job's assigned label
Merge pull request #24 from maselvaraj/master

Added the ability to launch Jenkins slaves that differ in resource requirements.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/main/java/org/jenkinsci/plugins/mesos/Mesos.java
	src/main/java/org/jenkinsci/plugins/mesos/MesosCloud.java