* fix service file for rpm packages build
* Deprecate pid_file config Signed-off-by: Shivam Sandbhor <shivam.sandbhor@gmail.com> * Fix unit test Signed-off-by: Shivam Sandbhor <shivam.sandbhor@gmail.com> * Impl review suggestions. Signed-off-by: Shivam Sandbhor <shivam.sandbhor@gmail.com>