Fix junos terminal regex for cluster srx devices (#53006)

* Fix junos terminal regex for cluster srx devices

Fixes #50726

*  Modify junos terminal regex to match for
   string `{primary:node0}` which is also part of the
   prompt.
*  Modify network_cli connection plugin to ignore
   multiple prompt matched lines.

* Fix review comment

lib/ansible/plugins/connection/network_cli.py

@@ -539,9 +539,14 @@ class Connection(NetworkConnectionBase):
         '''
         cleaned = []
         for line in resp.splitlines():
-            if (command and line.strip() == command.strip()) or self._matched_prompt.strip() in line:
+            if command and line.strip() == command.strip():
                 continue
-            cleaned.append(line)
+
+            for prompt in self._matched_prompt.strip().splitlines():
+                if prompt.strip() in line:
+                    break
+            else:
+                cleaned.append(line)
         return b'\n'.join(cleaned).strip()
 
     def _find_prompt(self, response):

lib/ansible/plugins/terminal/junos.py

@@ -32,7 +32,7 @@ display = Display()
 class TerminalModule(TerminalBase):
 
     terminal_stdout_re = [
-        re.compile(br"[\r\n]?[\w@+\-\.:\/\[\]]+[>#%] ?$"),
+        re.compile(br"({primary:node\d+})?[\r\n]?[\w@+\-\.:\/\[\]]+[>#%] ?$"),
     ]
 
     terminal_stderr_re = [