Help text improvement in "Retrieve Password": mention private key rather than key pair

[Akihiro Motoki]

openstack_dashboard/dashboards/project/instances/templates/instances/_decryptpassword.html

A private key is used to decrypt a password.
It is better to update the message to mention "private key" needs to be specified.

- <p>{% trans "To decrypt your password you will need your key pair for this instance. Select your key pair file, or cop
y and paste the content of your private key file into the text area below, then click Decrypt Password."%}</p>
+ <p>{% trans "To decrypt your password you will need the private key of your key pair for this instance. Select the pri
vate key file, or copy and paste the content of your private key file into the text area below, then click Decrypt Password
."%}</p>

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/80223

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/80223
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=be3a7532c09f4be0ab5f1a416d57f5ced8077823
Submitter: Jenkins
Branch: master

commit be3a7532c09f4be0ab5f1a416d57f5ced8077823
Author: Akihiro Motoki <email address hidden>
Date: Thu Mar 13 03:11:17 2014 +0900

    Improve help message in Retrieve Password form

    A private key is used to decrypt a password.
    It is better to update the message to mention "private key" explicitly
    instead of "key pair". "key pair" is a pair of private and public key.

    Change-Id: Icd5aa8fae2a348df011861469d028903bd71ec02
    Closes-Bug: #1291529