Replaced string with regex in sub method

[sanga1794]

Signed-off-by: sanga17 [email protected]

Description

Fixed knife rotate all keys -- rotates a deleted key

Related Issue

Fixed: #257

Output Before Fix

bundle exec knife vault rotate all keys -c ../../chef-repo/.chef/knife.rb

Rotating keys for: pass user_keys_details_keys
ERROR: ChefVault::Exceptions::KeysNotFound: pass/user_details_keys_keys could not be found

Output After Fix

bundle exec knife vault rotate all keys -c ../../chef-repo/.chef/knife.rb

Rotating keys for: pass user_keys_details

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.
• All commits have been signed-off for the Developer Certificate of Origin.