Change CI SSHConnection class open() and Amarisoft UE class prompt

The Amarisoft root prompt contained '#' (as usual for root). However, to
integrate this into the UE management logic (cls_module_ue.py), we are
forced to use '$'. We changed the root command prompt to use '$', and
therefore change it here as well.

ci-scripts/sshconnection.py

@@ -56,7 +56,7 @@ class SSHConnection():
 		self.picocom_closure = True
 
 	def open(self, ipaddress, username, password):
-		prompt = "#" if username == "root" else "\$"
+		prompt = "\$"
 		count = 0
 		connect_status = False
 		while count < 4: