SetLan: Define the global network timer

As timer is being referred in the provider library
so it should be defined in per process(host-ipmid, net-ipmid)
context.

Defining the timer requires to pull the code of timer in this
repository so adding the timer class.

Change-Id: I4ea5f51fed03dd87d70868b0bc76ff1fb683931c
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
4 files changed