cockroachdb#3038 - Add copy-to-clipboard function to Getting Started

Link: https://www.cockroachlabs.com/docs/stable/secure-a-cluster.html

I added {% include copy-clipboard.html %} before code blocks to allow for the Copy to Clipboard function.

v2.0/secure-a-cluster.md

@@ -30,6 +30,7 @@ Also, feel free to watch this process in action before going through the steps y
 
 You can use either `cockroach cert` commands or [`openssl` commands](create-security-certificates-openssl.html) to generate security certificates. This section features the `cockroach cert` commands.
 
+{% include copy-clipboard.html %}
 ~~~ shell
 # Create a certs directory and safe directory for the CA key.
 # If using the default certificate directory (`${HOME}/.cockroach-certs`), make sure it is empty.
@@ -62,6 +63,7 @@ $(hostname) \
 
 ## Step 2.  Start the first node
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \
@@ -95,6 +97,7 @@ At this point, your cluster is live and operational. With just one node, you can
 
 In a new terminal, add the second node:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \
@@ -108,6 +111,7 @@ $ cockroach start \
 
 In a new terminal, add the third node:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \
@@ -127,6 +131,7 @@ Now that you've scaled to 3 nodes, you can use any node as a SQL gateway to the
 
 {{site.data.alerts.callout_info}}The SQL client is built into the <code>cockroach</code> binary, so nothing extra is needed.{{site.data.alerts.end}}
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach sql \
 --certs-dir=certs
@@ -137,6 +142,7 @@ $ cockroach sql \
 
 Run some basic [CockroachDB SQL statements](learn-cockroachdb-sql.html):
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > CREATE DATABASE bank;
 
@@ -158,12 +164,14 @@ Run some basic [CockroachDB SQL statements](learn-cockroachdb-sql.html):
 
 Exit the SQL shell on node 1:
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > \q
 ~~~
 
 Then connect the SQL shell to node 2, this time specifying the node's non-default port:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach sql \
 --certs-dir=certs \
@@ -177,6 +185,7 @@ $ cockroach sql \
 
 Now run the same `SELECT` query:
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > SELECT * FROM bank.accounts;
 ~~~
@@ -194,6 +203,7 @@ As you can see, node 1 and node 2 behaved identically as SQL gateways.
 
 Exit the SQL shell on node 2:
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > \q
 ~~~
@@ -222,6 +232,7 @@ Once you're done with your test cluster, switch to the terminal running the firs
 
 At this point, with 2 nodes still online, the cluster remains operational because a majority of replicas are available. To verify that the cluster has tolerated this "failure", connect the built-in SQL shell to nodes 2 or 3. You can do this in the same terminal or in a new terminal.
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach sql \
 --certs-dir=certs \
@@ -231,6 +242,7 @@ $ cockroach sql \
 # To exit: CTRL + D.
 ~~~
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > SELECT * FROM bank.accounts;
 ~~~
@@ -246,6 +258,7 @@ $ cockroach sql \
 
 Exit the SQL shell:
 
+{% include copy-clipboard.html %}
 ~~~ sql
 > \q
 ~~~
@@ -256,6 +269,7 @@ Now stop nodes 2 and 3 by switching to their terminals and pressing **CTRL + C**
 
 If you don't plan to restart the cluster, you may want to remove the nodes' data stores:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ rm -rf cockroach-data node2 node3
 ~~~
@@ -266,6 +280,7 @@ If you decide to use the cluster for further testing, you'll need to restart at
 
 Restart the first node from the parent directory of `cockroach-data/`:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \
@@ -278,6 +293,7 @@ $ cockroach start \
 
 In a new terminal, restart the second node from the parent directory of `node2/`:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \
@@ -291,6 +307,7 @@ $ cockroach start \
 
 In a new terminal, restart the third node from the parent directory of `node3/`:
 
+{% include copy-clipboard.html %}
 ~~~ shell
 $ cockroach start \
 --certs-dir=certs \