CI RFsim-4G: wait for attach, instead of sleep

For various reasons, the UE might take longer to connect to the eNB. A
simple sleep might not be enough; instead, use Attach() to actively wait
that the UE gets an IP address. The added bonus of this function is that
it will also stop&restart a UE if it did not attach, i.e., it will try
multiple times to attach the UE.

ci-scripts/xml_files/container_4g_rfsim_fdd_05MHz.xml

@@ -34,7 +34,7 @@
  000013
  000001
  000014
- 000002
+ 000015
  020011
  020012
  030011
@@ -94,6 +94,12 @@
                 <nb_healthy>9</nb_healthy>
         </testCase>
 
+        <testCase id="000015">
+                <class>Attach_UE</class>
+                <desc>Attach OAI UE (Wait for IP)</desc>
+                <id>rfsim4g_ue</id>
+        </testCase>
+
         <testCase id="020011">
                 <class>Ping</class>
                 <desc>Ping Traffic-Gen from LTE-UE</desc>

ci-scripts/xml_files/container_4g_rfsim_fdd_10MHz.xml

@@ -34,7 +34,7 @@
  000013
  000001
  000014
- 000002
+ 000015
  020011
  020012
  030011
@@ -94,6 +94,12 @@
                 <nb_healthy>9</nb_healthy>
         </testCase>
 
+        <testCase id="000015">
+                <class>Attach_UE</class>
+                <desc>Attach OAI UE (Wait for IP)</desc>
+                <id>rfsim4g_ue</id>
+        </testCase>
+
         <testCase id="020011">
                 <class>Ping</class>
                 <desc>Ping Traffic-Gen from LTE-UE</desc>

ci-scripts/xml_files/container_4g_rfsim_fdd_20MHz.xml

@@ -34,7 +34,7 @@
  000013
  000001
  000014
- 000002
+ 000015
  020011
  020012
  030011
@@ -94,6 +94,12 @@
                 <nb_healthy>9</nb_healthy>
         </testCase>
 
+        <testCase id="000015">
+                <class>Attach_UE</class>
+                <desc>Attach OAI UE (Wait for IP)</desc>
+                <id>rfsim4g_ue</id>
+        </testCase>
+
         <testCase id="020011">
                 <class>Ping</class>
                 <desc>Ping Traffic-Gen from LTE-UE</desc>