software/ors-amarisoft: slapos-render-config: Replace *arfcn numbers with valid ones

So that it is possible to try running enb on generated configs becuase
with previous numbers enb refuses to start:

    ~/enb# ./lteenb  x/old/enb.cfg
    ...
    x/old/enb.cfg:50: field 'dl_earfcn': range is [0:262143] (LTE Cell #0)

    ~/enb# ./lteenb  x/old/gnb.cfg
    ...
    x/old/gnb.cfg:54: invalid frequency band (NR Cell #1)

We need enb to be able to start with generated config because enb dumps in its
enb.log the real configuration that it builds from cell_list + cell_default and
nr_cell_list + cell_default - which is possible to extract via `json_util` and
which we want to check after our changes to enb.jinja2.cfg to see if we
really don't introduce semantic mistakes when e.g. moving things in between
cell_default to cell_list (see next patch).

With new frequencies enb and gnb both start ok.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on nexedi/slapos!1515

software/ors-amarisoft/slapos-render-config.py

@@ -59,9 +59,9 @@ def do(src, out, rat, slapparameter_dict):
         "bbu": "ors",
         "ru": "ors",
         "one_watt": "True",
-        "earfcn": 646666,
-        "nr_arfcn": 646666,
-        "nr_band": 43,
+        "earfcn": 36100,
+        "nr_arfcn": 380000,
+        "nr_band": 39,
         "tx_gain": 62,
         "rx_gain": 43,
         "sib23_file": "sib",