Explicitly state tools are not shells

Some LLMs don't understand that available tools are not shell commands,
so they send shell commands with pipes.

In this patch we try to guard against such explicitly errors by
explicitly stating that the tools are not shell.

Author: Akrog

src/rhos_ls_mcps/oc.py

@@ -75,6 +75,8 @@ async def openshift_cli_mcp_tool(command_str: str, ctx: Context) -> str:
     Runs an `oc` command as if it were run in a terminal.
     No need to provide credentials, they are already passed by the client.
 
+    THIS IS NOT A SHELL don't use pipes
+
     Args:
        command_str: String with the command to run.
     Returns:

src/rhos_ls_mcps/osc.py

@@ -166,6 +166,7 @@ async def openstack_cli_mcp_tool(command_str: str, ctx: Context) -> str:
     - `nova list` is now `openstack server list`
 
     DON'T EVER USE commands such as cinder, nova, glance. Use `openstack` instead.
+    THIS IS NOT A SHELL don't use pipes
 
     A complete list of commands is available using the help commands:
     - Global options and supported commands: `openstack --help` or `--help`