Add delay in junos integration test after netconf is enabled (#33899)

junos integration test fails intermittently after task enables netconf
 on the remote host and the second task tries to create a persistent
 connection. Add a delay after the first task to ensure netconf is up
 running on remote host.

test/integration/targets/junos_netconf/tests/cli/changeport.yaml

@@ -7,7 +7,6 @@
     state: present
   register: result
 
-
 ###################################
 - name: Change port
   junos_netconf:
@@ -29,6 +28,10 @@
     that:
       - "result.changed == false"
 
+- name: wait for netconf server to come up
+  pause:
+    seconds: 10
+
 - name: Ensure we can communicate over 8022
   junos_command:
     rpcs:

test/integration/targets/junos_netconf/tests/cli/netconf.yaml

@@ -18,6 +18,10 @@
 
 ###################################
 
+- name: wait for netconf server to come up
+  pause:
+    seconds: 10
+
 - name: Ensure we can communicate over netconf
   junos_command:
     rpcs: get-software-information

test/integration/targets/prepare_junos_tests/tasks/main.yml

@@ -7,3 +7,7 @@
 - name: Ensure netconf is enabled
   junos_netconf:
     state: present
+
+- name: wait for netconf server to come up
+  pause:
+    seconds: 10