Fix RunHostTest reboot handling to avoid unnecessary power cycle

- Execute reboot command via SSH instead of forcing power cycle
- Wait for SSH to reconnect after reboot (no goto_state OFF/ON)
- Prevents unnecessary LPAR shutdown and restart
- Faster reboot handling with proper SSH reconnection

Signed-off-by: Praveen K Pandey <praveen@linux.vnet.ibm.com>

Author: PraveenPenguin

testcases/RunHostTest.py

@@ -29,6 +29,7 @@
 
 import unittest
 import os
+import time
 
 from common.OpTestSSHConnection import OpTestSSHConnection, OpTestCommandResult
 from common.OpTestCommandExecutor import OpTestCommandExecutor
@@ -105,21 +106,42 @@ def runTest(self):
                         continue
 
                     if "reboot" in line:
-                        log.info("Reboot command detected - system will restart")
-                        if self.console_thread:
-                            self.console_thread.console_terminate()
-                        self.cv_SYSTEM.goto_state(OpSystemState.OFF)
-                        self.cv_SYSTEM.goto_state(OpSystemState.OS)
+                        log.info("Reboot command detected - executing reboot and waiting for system to come back")
 
-                        # Reconnect after reboot
+                        # Execute reboot command
                         if use_new_ssh:
-                            executor = self.cv_SYSTEM.cv_HOST.get_command_executor()
+                            try:
+                                executor.run_command(line, timeout=10)
+                            except:
+                                pass  # SSH will disconnect during reboot
                         else:
-                            con = self.cv_SYSTEM.cv_HOST.get_ssh_connection()
+                            try:
+                                con.run_command(line, timeout=10)
+                            except:
+                                pass  # SSH will disconnect during reboot
+                        
+                        # Wait for system to reboot and SSH to come back
+                        log.info("Waiting for system to reboot...")
+                        time.sleep(60)  # Give system time to start rebooting
+                        
+                        # Wait for SSH to become available again
+                        log.info("Waiting for SSH to become available after reboot...")
+                        max_wait = 300  # 5 minutes
+                        for i in range(max_wait):
+                            try:
+                                if use_new_ssh:
+                                    executor = self.cv_SYSTEM.cv_HOST.get_command_executor()
+                                    executor.run_command("echo 'SSH is back'", timeout=10)
+                                else:
+                                    con = self.cv_SYSTEM.cv_HOST.get_ssh_connection()
+                                    con.run_command("echo 'SSH is back'", timeout=10)
+                                log.info(f"SSH reconnected after {i + 60}s")
+                                break
+                            except:
+                                if i % 10 == 0:
+                                    log.info(f"Still waiting for SSH... ({i + 60}s elapsed)")
+                                time.sleep(1)
 
-                        if not use_new_ssh:
-                            self.console_thread = OpSOLMonitorThread(1, "console")
-                            self.console_thread.start()
                         continue
 
                     if use_new_ssh: