cnpool: examples and config tests: use 'msc 0'/'sgsn 0' syntax

After recent introduction of multiple 'msc' and 'sgsn' nodes in the
VTY config, switch cfg files to the new syntax:
- in doc/examples
- for 'make config-tests'
  - have one test in old config syntax to test backwards compat:
    'legacy', an exact copy of 'one_cs7_with_addrs'.

Related: SYS#6412
Change-Id: If999b71a8a8237699f6ccfcaa31d1885e66c0518

doc/examples/osmo-hnbgw/osmo-hnbgw-cs7.cfg

@@ -11,10 +11,10 @@ hnbgw
  iuh
   local-ip 0.0.0.0
   hnbap-allow-tmsi 1
- iucs
-  remote-addr my-msc
- iups
-  remote-addr my-sgsn
+msc 0
+ remote-addr my-msc
+sgsn 0
+ remote-addr my-sgsn
 
 log stderr
  logging filter all 1

tests/config/legacy.cfg

@@ -0,0 +1,12 @@
+# explicitly point at cs7 instance 0 via two address book entries for CS and PS. Leave ASP and AS to auto-configuration.
+cs7 instance 0
+ point-code 1.1.1
+ sccp-address my-msc
+  point-code 1.2.3
+ sccp-address my-sgsn
+  point-code 1.4.2
+hnbgw
+ iucs
+  remote-addr my-msc
+ iups
+  remote-addr my-sgsn

tests/config/legacy.vty

@@ -0,0 +1,47 @@
+OsmoHNBGW> enable
+
+OsmoHNBGW# ### ASP and AS were auto-configured
+OsmoHNBGW# show cs7 config
+cs7 instance 0
+ point-code 1.1.1
+ asp asp-clnt-msc-0 2905 0 m3ua
+  local-ip localhost
+  remote-ip localhost
+  sctp-role client
+ as as-clnt-msc-0 m3ua
+  asp asp-clnt-msc-0
+  routing-key 0 1.1.1
+ sccp-address my-msc
+  routing-indicator PC
+  point-code 1.2.3
+ sccp-address my-sgsn
+  routing-indicator PC
+  point-code 1.4.2
+
+OsmoHNBGW# ### IuCS and IuPS were explicitly pointed to specific remote point-codes, using cs7 instance 0 addresses
+OsmoHNBGW# show cnlink
+IuCS: OsmoHNBGW:RI=SSN_PC,PC=1.1.1,SSN=RANAP <-> my-msc=RI=SSN_PC,PC=1.2.3,SSN=RANAP
+      SS7 route: pc=0=0.0.0 mask=0x0=0.0.0 via AS as-clnt-msc-0 proto=m3ua ASP asp-clnt-msc-0
+IuPS: OsmoHNBGW:RI=SSN_PC,PC=1.1.1,SSN=RANAP <-> my-sgsn=RI=SSN_PC,PC=1.4.2,SSN=RANAP
+      SS7 route: pc=0=0.0.0 mask=0x0=0.0.0 via AS as-clnt-msc-0 proto=m3ua ASP asp-clnt-msc-0
+
+OsmoHNBGW# show running-config
+...
+cs7 instance 0
+ point-code 1.1.1
+ sccp-address my-msc
+  routing-indicator PC
+  point-code 1.2.3
+ sccp-address my-sgsn
+  routing-indicator PC
+  point-code 1.4.2
+hnbgw
+ rnc-id 23
+ log-prefix hnb-id
+ iuh
+...
+msc 0
+ remote-addr my-msc
+sgsn 0
+ remote-addr my-sgsn
+...

tests/config/one_cs7_with_addrs.cfg

@@ -5,8 +5,7 @@ cs7 instance 0
   point-code 1.2.3
  sccp-address my-sgsn
   point-code 1.4.2
-hnbgw
- iucs
-  remote-addr my-msc
- iups
-  remote-addr my-sgsn
+msc 0
+ remote-addr my-msc
+sgsn 0
+ remote-addr my-sgsn

tests/config/one_cs7_with_iucs_addr.cfg

@@ -3,6 +3,5 @@ cs7 instance 0
  point-code 1.1.1
  sccp-address my-msc
   point-code 1.2.3
-hnbgw
- iucs
-  remote-addr my-msc
+msc 0
+ remote-addr my-msc

tests/config/one_cs7_with_iups_addr.cfg

@@ -3,6 +3,5 @@ cs7 instance 0
  point-code 1.1.1
  sccp-address my-sgsn
   point-code 1.4.2
-hnbgw
- iups
-  remote-addr my-sgsn
+sgsn 0
+ remote-addr my-sgsn

tests/config/two_cs7_with_addrs.cfg

@@ -10,8 +10,7 @@ cs7 instance 1
  sccp-address my-sgsn
   point-code 2.4.2
 
-hnbgw
- iucs
-  remote-addr my-msc
- iups
-  remote-addr my-sgsn
+msc 0
+ remote-addr my-msc
+sgsn 0
+ remote-addr my-sgsn