Changed the code to read multiple lifecycle confiruration files from a d...

...irectory, intstead of a single file

Earlier the governance module was reading the default lifecycle configuration from CARBON_HOME/repository/resources/lifcycles/configurations.xml. I have changed this to read multiple files from the directory "CARBON_HOME/repository/resources/lifcycles/". 
After this changes, if we want to create a new lifecycle, we need to put our configuration file within this directory. Here the configuration file name should be same as the aspect name of the lifecycle