Move topic to Injecting Data section. (#3623)

* Move topic to Injecting Data section.

* Update include paths.

* Remove old file.

docs/tasks/inject-data-application/distribute-credentials-secure.md

@@ -1,8 +1,10 @@
 ---
-title: Distributing Credentials Securely
+title: Distributing Credentials Securely Using Secrets
 redirect_from:
 - "/docs/user-guide/secrets/walkthrough/"
 - "/docs/user-guide/secrets/walkthrough.html"
+- "/docs/tasks/configure-pod-container/distribute-credentials-secure/"
+- "/docs/tasks/configure-pod-container/distribute-credentials-secure.html"
 ---
 
 {% capture overview %}
@@ -36,7 +38,7 @@ and the base-64 representation of your password is `Mzk1MjgkdmRnN0pi`.
 Here is a configuration file you can use to create a Secret that holds your
 username and password:
 
-{% include code.html language="yaml" file="secret.yaml" ghlink="/docs/tasks/administer-cluster/secret.yaml" %}
+{% include code.html language="yaml" file="secret.yaml" ghlink="/docs/tasks/inject-data-application/secret.yaml" %}
 
 1. Create the Secret
 
@@ -79,7 +81,7 @@ username and password:
 
 Here is a configuration file you can use to create a Pod:
 
-{% include code.html language="yaml" file="secret-pod.yaml" ghlink="/docs/tasks/administer-cluster/secret-pod.yaml" %}
+{% include code.html language="yaml" file="secret-pod.yaml" ghlink="/docs/tasks/inject-data-application/secret-pod.yaml" %}
 
 1. Create the Pod:
 
@@ -126,7 +128,7 @@ is exposed:
 
 Here is a configuration file you can use to create a Pod:
 
-{% include code.html language="yaml" file="secret-envars-pod.yaml" ghlink="/docs/tasks/administer-cluster/secret-envars-pod.yaml" %}
+{% include code.html language="yaml" file="secret-envars-pod.yaml" ghlink="/docs/tasks/inject-data-application/secret-envars-pod.yaml" %}
 
 1. Create the Pod: