Reduce the time given to the UE to re-attach after failure

Number of tries is reduced from 4 to 3
After each failure the timeout is incremented by 20

ci-scripts/cls_module.py

@@ -111,10 +111,11 @@ class Module_UE:
 			return self._collectTrace(ctx)
 		return None
 
-	def attach(self, attach_tries = 4, attach_timeout = 60):
+	def attach(self, attach_tries = 3, attach_timeout = 0):
 		ip = None
 		while attach_tries > 0:
 			self._command(self.cmd_dict["attach"])
+			attach_timeout += 20
 			timeout = attach_timeout
 			logging.debug("Waiting for IP address to be assigned")
 			ip = self.getIP(silent=False, reportNonZero=True)