It is now possible to specify the number of replicas of the freezer
index in the elasticsearch database.
The value is set by the freezer-db-init script and can be specified
either as a command line parameter or defined in the freezer-api config
file.
When not specified it is set to the default value 2.
Adds the following command line parameter to the freeze-db-init script:
-r --replicas <N>
Adds the following parameter to the [storage] group of the
freezer-api.conf file:
number_of_replicas = N
Change-Id: I210dce8bf634727f52c87152c3d036cc4d7065b5
4faa13b8e7