Fix all ACI examples to use delegate_to (#43439)

This is to avoid users connecting to the APIC using SSH, which is likely
to fail. In the ACI documentation (linked from every module) we go into
more details on how people are supposed to work with the modules..

lib/ansible/modules/network/aci/aci_bd_subnet.py

@@ -113,6 +113,8 @@ EXAMPLES = r'''
     username: admin
     password: SomeSecretPassword
     tenant: production
+    state: present
+  delegate_to: localhost
 
 - name: Create a bridge domain
   aci_bd:
@@ -121,6 +123,8 @@ EXAMPLES = r'''
     password: SomeSecretPassword
     tenant: production
     bd: database
+    state: present
+  delegate_to: localhost
 
 - name: Create a subnet
   aci_bd_subnet:
@@ -131,6 +135,8 @@ EXAMPLES = r'''
     bd: database
     gateway: 10.1.1.1
     mask: 24
+    state: present
+  delegate_to: localhost
 
 - name: Create a subnet with options
   aci_bd_subnet:
@@ -146,6 +152,8 @@ EXAMPLES = r'''
     scope: public
     route_profile_l3_out: corp
     route_profile: corp_route_profile
+    state: present
+  delegate_to: localhost
 
 - name: Update a subnets scope to private and shared
   aci_bd_subnet:
@@ -157,6 +165,8 @@ EXAMPLES = r'''
     gateway: 10.1.1.1
     mask: 24
     scope: [private, shared]
+    state: present
+  delegate_to: localhost
 
 - name: Get all subnets
   aci_bd_subnet:
@@ -164,38 +174,44 @@ EXAMPLES = r'''
     username: admin
     password: SomeSecretPassword
     state: query
+  delegate_to: localhost
 
 - name: Get all subnets of specific gateway in specified tenant
   aci_bd_subnet:
     host: apic
     username: admin
     password: SomeSecretPassword
-    state: query
     tenant: production
     gateway: 10.1.1.1
     mask: 24
+    state: query
+  delegate_to: localhost
+  register: query_result
 
 - name: Get specific subnet
   aci_bd_subnet:
     host: apic
     username: admin
     password: SomeSecretPassword
-    state: query
     tenant: production
     bd: database
     gateway: 10.1.1.1
     mask: 24
+    state: query
+  delegate_to: localhost
+  register: query_result
 
 - name: Delete a subnet
   aci_bd_subnet:
     host: apic
     username: admin
     password: SomeSecretPassword
-    state: absent
     tenant: production
     bd: database
     gateway: 10.1.1.1
     mask: 24
+    state: absent
+  delegate_to: localhost
 '''
 
 RETURN = r'''