Adds the __main__ conditional check (#2098)

As is done in other ansible modules, this adds the __main__ check
to the module so that the module code itself can be used as a library.
For instance, when testing the code.

network/f5/bigip_facts.py

@@ -1687,4 +1687,3 @@ from ansible.module_utils.f5 import *
 
 if __name__ == '__main__':
     main()
-

network/f5/bigip_monitor_http.py

@@ -445,5 +445,6 @@ def main():
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.f5 import *
-main()
 
+if __name__ == '__main__':
+    main()

network/f5/bigip_monitor_tcp.py

@@ -469,5 +469,6 @@ def main():
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.f5 import *
-main()
 
+if __name__ == '__main__':
+    main()

network/f5/bigip_node.py

@@ -379,5 +379,6 @@ def main():
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.f5 import *
-main()
 
+if __name__ == '__main__':
+    main()

network/f5/bigip_pool.py

@@ -521,4 +521,6 @@ def main():
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.f5 import *
-main()
+
+if __name__ == '__main__':
+    main()

network/f5/bigip_pool_member.py

@@ -438,4 +438,6 @@ def main():
 # import module snippets
 from ansible.module_utils.basic import *
 from ansible.module_utils.f5 import *
-main()
+
+if __name__ == '__main__':
+    main()

network/f5/bigip_virtual_server.py

@@ -469,4 +469,3 @@ from ansible.module_utils.f5 import *
 
 if __name__ == '__main__':
     main()
-