Log Output Enhance: Access key metadata

[blakeca00]

For all access keys associated with an iam user:

3 important metadata info to write out to log:

• write key ID
• write key age (ie, created datetime)
• Calculate Age; write it to log

Write to log on all keyup operations (list, and rotate)

[blakeca00]

Metadata added:

• Access Key ID
• Create time
• Age

Caveat: Age is calc incorrectly

[blakeca00]

resolved in v0.9.1