Update nxos_install_os module (#40102)

* Add nxos_install_os integration tests

* Update call to check timers

* Update check_ansible_timer method

* Modify network_cli integration tests

* Add timer check for nxos_install_os

* Add comments for clear_persistent_sockets

* Update connection info for tests

* More updates

* Restructure files for provider and non-provider testing

* Update env var name and add check for ISSU switchover

test/integration/targets/nxos_install_os/tests/common/upgrade.yaml

@@ -0,0 +1,56 @@
+---
+- debug: msg="START connection={{ ansible_connection }} nxos_os_install upgrade"
+- debug: msg="Using provider={{ connection.transport }}"
+  when: connection is defined
+
+- set_fact: checkmode='no'
+- set_fact: issu='desired'
+
+- set_fact: image_dir='/Users/mwiebe/Projects/nxos_ansible/images/'
+
+- set_fact:
+    delete_image_list:
+      - nxos.7.0.3.I7.2.bin
+      - nxos.7.0.3.I7.3.bin
+
+#---------------------------------------------------------#
+# Upgrade to 6.0(2)U6(1a)                                 #
+#---------------------------------------------------------#
+
+- set_fact: si='n3000-uk9.6.0.2.U6.1a.bin'
+- set_fact: ki='n3000-uk9-kickstart.6.0.2.U6.1a.bin'
+
+- name: Upgrade to U6.1a
+  include: targets/nxos_install_os/tasks/upgrade/main_os_install.yaml
+
+#---------------------------------------------------------#
+# Upgrade to 6.0(2)U6(2a)                                 #
+#---------------------------------------------------------#
+
+- set_fact: si='n3000-uk9.6.0.2.U6.2a.bin'
+- set_fact: ki='n3000-uk9-kickstart.6.0.2.U6.2a.bin'
+
+- name: Upgrade to U6.2a
+  include: targets/nxos_install_os/tasks/upgrade/main_os_install.yaml
+
+#---------------------------------------------------------#
+# Upgrade to 6.0(2)U6(3a)                                 #
+#---------------------------------------------------------#
+
+- set_fact: si='n3000-uk9.6.0.2.U6.3a.bin'
+- set_fact: ki='n3000-uk9-kickstart.6.0.2.U6.3a.bin'
+
+- name: Upgrade to U6.3a
+  include: targets/nxos_install_os/tasks/upgrade/main_os_install.yaml
+
+#---------------------------------------------------------#
+# Upgrade to 7.0(3)I7(3)                                  #
+#---------------------------------------------------------#
+
+- set_fact: si='nxos.7.0.3.I7.2.bin'
+- set_fact: combined='true'
+
+- name: Upgrade to 7.0.3.I7.2
+  include: targets/nxos_install_os/tasks/upgrade/main_os_install.yaml
+
+- debug: msg="END connection={{ ansible_connection }} nxos_os_install upgrade"