Add ElogWithMetaDataCapture class

This callback class will create an error log with
exactly 1 metadata field, which takes a string.  This
metadata field will be filled in with the property paths,
names, and values of the properties that passed the
condition checks that caused the callback to be called
in the first place.

Tested: Ran with YAML rules that used this callback and
        checked that everything worked as specified.

Change-Id: Ib37206c63385939c583a09e7ba979d6e016691f6
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
5 files changed