Move Real-Time Stats Analysis to separate step

Factor out to make existing log analysis simpler. It will also allow to
more easily port this functionality to docker-based setups.

ci-scripts/xml_files/gnb_phytest_usrp_run.xml

@@ -37,7 +37,6 @@
     <desc>Initialize gNB USRP</desc>
     <node>caracal</node>
     <Initialize_eNB_args>-O ci-scripts/conf_files/gnb.band79.106prb.usrpn300.phytest-dora.conf --phy-test -q -U 768 -T 106 -t 23 -D 127 -m 28 -M 106 --usrp-tx-thread-config 1 --log_config.global_log_options level,nocolor,time</Initialize_eNB_args>
-    <rt_stats_cfg>datalog_rt_stats.default.yaml</rt_stats_cfg>
     <air_interface>NR</air_interface>
     <cmd_prefix>numactl --cpunodebind=netdev:enp94s0f0np0 --membind=netdev:enp94s0f0np0</cmd_prefix>
   </testCase>
@@ -48,6 +47,13 @@
     <idle_sleep_time_in_sec>60</idle_sleep_time_in_sec>
   </testCase>
 
+  <testCase>
+    <class>AnalyzeRTStats</class>
+    <desc>Analyze Real-Time Stats</desc>
+    <stats_cfg>datalog_rt_stats.default.yaml</stats_cfg>
+    <node>caracal</node>
+  </testCase>
+
   <testCase>
     <class>Terminate_eNB</class>
     <always_exec>true</always_exec>