suites: gprs: Introduce suite with ping test

Only GPRS signalling setup is supported so far by osmo-gsm-tester, thus
we don't test sending data yet here, but at least we can already test
pdp context activation.

This test will be extended to run ping once we support setting up the
GPRS data plane in osmo-gsm-tester.

Change-Id: I8695029cb7a43cd48f650c88f38b4c054da0bc6b

example/resources.conf

@@ -7,6 +7,8 @@ ip_address:
 - addr: 10.42.42.5
 - addr: 10.42.42.6
 - addr: 10.42.42.7
+- addr: 10.42.42.8
+- addr: 10.42.42.9
 
 bts:
 - label: sysmoBTS 1002

suites/gprs/ping.py

@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+from osmo_gsm_tester.testenv import *
+
+hlr = suite.hlr()
+bts = suite.bts()
+pcu = bts.pcu()
+mgcpgw = suite.mgcpgw(bts_ip=bts.remote_addr())
+mgw_bsc = suite.mgw()
+stp = suite.stp()
+ggsn = suite.ggsn()
+sgsn = suite.sgsn(hlr, ggsn)
+msc = suite.msc(hlr, mgcpgw, stp)
+bsc = suite.bsc(msc, mgw_bsc, stp)
+ms = suite.modem()
+
+bsc.bts_add(bts)
+sgsn.bts_add(bts)
+
+print('start network...')
+hlr.start()
+stp.start()
+ggsn.start()
+sgsn.start()
+msc.start()
+mgcpgw.start()
+mgw_bsc.start()
+bsc.start()
+
+bts.start()
+print('Waiting for bts to be ready...')
+wait(bts.ready_for_pcu)
+pcu.start()
+
+hlr.subscriber_add(ms)
+
+ms.connect(msc.mcc_mnc())
+ms.attach()
+
+ms.log_info()
+
+print('waiting for modems to attach...')
+wait(ms.is_connected, msc.mcc_mnc())
+wait(msc.subscriber_attached, ms)
+
+print('waiting for modems to attach to data services...')
+wait(ms.is_attached)
+ctx_id_v4 = ms.activate_context(apn='internet', protocol=ms.CTX_PROT_IPv4)
+# IPv6 no supported in EC20: org.ofono.Error.NotImplemented: Implementation not provided (36)
+# ctx_id_v6 = ms.activate_context(apn='inet6', protocol=ms.CTX_PROT_IPv6)
+# IPv46 (dual) not supported in EC20: org.ofono.Error.Failed: Operation failed (36)
+# ctx_id_v46 = ms.activate_context(apn='inet6', protocol=ms.CTX_PROT_IPv46)
+sleep(5)
+# TODO: send ping to server or open TCP conn with a socket in python
+ms.deactivate_context(ctx_id_v4)

suites/gprs/suite.conf

@@ -0,0 +1,9 @@
+resources:
+  ip_address:
+  - times: 8 # msc, bsc, hlr, stp, mgw*2, sgsn, ggsn
+  bts:
+  - times: 1
+  modem:
+  - times: 1
+    features:
+    - gprs