software/ors-amarisoft: Merge instance-ue-lte.jinja2.cfg + instance-ue-nr.jinja2.cfg  -> into instance-ue.jinja2.cfg

This is preparatory step for MultiRU and removes code duplication.

Mostly straightforward, but there is one backward incompatible change: instead
of ue_lte_config_link and ue_nr_config_link there is now only one
ue_config_link parameter.

We talked with Lu some time ago and my understanding is that UEsim is not widely
used. This way I think it is better to clarify things instead of putting
backward compatibility effort for nothing.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on nexedi/slapos!1523

--------

Appendix. Diff between instance-ue-lte.jinja2.cfg and instance-ue-nr.jinja2.cfg before this patch

```
$ git diff --no-index instance-ue-lte.jinja2.cfg instance-ue-nr.jinja2.cfg
```

```diff
diff --git a/instance-ue-lte.jinja2.cfg b/instance-ue-nr.jinja2.cfg
index 4d4a2e329..8fd238bfb 100644
--- a/instance-ue-lte.jinja2.cfg
+++ b/instance-ue-nr.jinja2.cfg
@@ -1,7 +1,7 @@
 [buildout]
 parts =
   directory
-  lte-ue-lte-config
+  lte-ue-nr-config
   lte-ue-service
   check-sdr-busy.py
   monitor-base
@@ -35,11 +35,11 @@ url = {{ slap_connection['server-url'] }}
 key = {{ slap_connection['key-file'] }}
 cert = {{ slap_connection['cert-file'] }}

-configuration.default_lte_bandwidth = {{ default_lte_bandwidth }}
+configuration.default_nr_bandwidth = {{ default_nr_bandwidth }}
 configuration.default_n_antenna_dl = {{ default_n_antenna_dl }}
 configuration.default_n_antenna_ul = {{ default_n_antenna_ul }}
-configuration.default_lte_imsi = {{ default_lte_imsi }}
-configuration.default_lte_k = {{default_lte_k}}
+configuration.default_nr_imsi = {{ default_nr_imsi }}
+configuration.default_nr_k = {{ default_nr_k }}

 [directory]
 recipe = slapos.cookbook:mkdirectory
@@ -56,11 +56,11 @@ service = ${:etc}/service
 promise = ${:etc}/promise
 log = ${:var}/log

-{% if slapparameter_dict.get("ue_lte_config_link", None) %}
-[ue-lte-config-dl]
+{% if slapparameter_dict.get("ue_nr_config_link", None) %}
+[ue-nr-config-dl]
 recipe = slapos.recipe.build:download
-url = {{ slapparameter_dict.get("ue_lte_config_link") }}
-version = {{ slapparameter_dict.get("ue_lte_config_version") }}
+url = {{ slapparameter_dict.get("ue_nr_config_link") }}
+version = {{ slapparameter_dict.get("ue_nr_config_version") }}
 offline = false
 {% endif %}

@@ -87,7 +87,7 @@ mode = 0775
 reserve-cpu = True
 pidfile = ${directory:run}/ue.pid
 hash-files =
-  ${lte-ue-lte-config:output}
+  ${lte-ue-nr-config:output}
   ${lte-ue-sh-wrapper:output}
 environment =
   LD_LIBRARY_PATH={{ openssl_location }}/lib
@@ -101,18 +101,19 @@ context =
   section slap_configuration slap-configuration
   section pub_info publish-connection-information
   key slapparameter_dict slap-configuration:configuration
-  json do_lte true
-  json do_nr  false
+  json do_lte false
+  json do_nr  true

-[lte-ue-lte-config]
+[lte-ue-nr-config]
 <= config-base
-{% if slapparameter_dict.get("ue_lte_config_link", None) %}
-url = ${ue-lte-config-dl:target}
+{% if slapparameter_dict.get("ue_nr_config_link", None) %}
+url = ${ue-nr-config-dl:target}
 {% else %}
 url = {{ ue_template }}
 {% endif %}
 output = ${directory:etc}/ue.cfg

+
 [publish-connection-information]
 <= monitor-publish
 recipe = slapos.cookbook:publish.serialised
```