Allow permission changes to make it into the email alert.

[ddpbsd]

It looks like ossec-maild was never setup to pass on permissions changes (or that was lost somewhere over the years I dunno).

Fixes issue #1571 reported by @junqian1992

Before:

Received From: ossec-builder->syscheck
Rule: 552 fired (level 7) -> "Integrity checksum changed again (3rd time)."
Portion of the log(s):

Integrity checksum changed for: '/var/test/one'

After:

Received From: ossec-builder->syscheck
Rule: 552 fired (level 7) -> "Integrity checksum changed again (3rd time)."
Portion of the log(s):

Integrity checksum changed for: '/var/test/three'
Permission change: 'rw-r--r--' to '---------'