Add netflix_service to http service paths

This change is to match new changes in to InputStream Adaptive addon for Kodi 21
the first path folder "netflix_service" will be used to distinguish this addon http proxy service from another one
so if CDM have to write some persistent data will not be mixed with CDM data of other addons

ref: https://github.com/xbmc/inputstream.adaptive/wiki/How-to-provide-custom-manifest-and-license

resources/lib/common/ipc.py

@@ -20,10 +20,10 @@
 IPC_TIMEOUT_SECS = 20
 
 # IPC over HTTP endpoints
-IPC_ENDPOINT_CACHE = '/cache'
-IPC_ENDPOINT_MSL = '/msl'
-IPC_ENDPOINT_NFSESSION = '/nfsession'
-IPC_ENDPOINT_NFSESSION_TEST = '/nfsessiontest'
+IPC_ENDPOINT_CACHE = '/netflix_service/cache'
+IPC_ENDPOINT_MSL = '/netflix_service/msl'
+IPC_ENDPOINT_NFSESSION = '/netflix_service/nfsession'
+IPC_ENDPOINT_NFSESSION_TEST = '/netflix_service/nfsessiontest'
 
 
 class Signals:  # pylint: disable=no-init,too-few-public-methods