Simplify network workflows to use a single IOM IP address

Either IOM can reach the other via Redfish, so there's no need to collect
separate IOM1/IOM2 addresses. Firmware update and system check now prompt
for one IP per shelf with a note that either IOM's address works.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

modules/workflow_check.py

@@ -158,26 +158,9 @@ def _check_via_network():
     print()
     password = prompt_password()
     print()
+    ip = prompt_ip("  IOM IP address (either IOM1 or IOM2)")
 
-    print("  Which IOM(s) do you want to check?")
-    print(f"    {_c(C.BOLD, '1')}  IOM1 only")
-    print(f"    {_c(C.BOLD, '2')}  IOM2 only")
-    print(f"    {_c(C.BOLD, '3')}  Both IOM1 and IOM2")
-    print()
-
-    while True:
-        choice = prompt("Select [1/2/3]")
-        if choice in ("1", "2", "3"):
-            break
-        warn("Please enter 1, 2, or 3.")
-
-    iom_list = []
-    if choice in ("1", "3"):
-        ip1 = prompt_ip("  IOM1 IP address")
-        iom_list.append(("IOM1", ip1))
-    if choice in ("2", "3"):
-        ip2 = prompt_ip("  IOM2 IP address")
-        iom_list.append(("IOM2", ip2))
+    iom_list = [("IOM1", ip), ("IOM2", ip)]
 
     rule("Querying IOM Status")
     info("Querying network settings and firmware versions over the network...")