fix(addon): Change fwcloud src to EVAL and remove fwcloud dest alias

Update Props.conf (#257)
Resolve issue #220

* fix(addon): Change fwcloud src to EVAL and remove fwcloud dest alias

---------

Co-authored-by: Brian Torres-Gil <btorres-gil@paloaltonetworks.com>

Author: as3923

Splunk_TA_paloalto/default/props.conf

@@ -73,7 +73,7 @@ FIELDALIAS-fwcloud_session_id = SessionID as session_id
 EVAL-severity = coalesce(Severity, VendorSeverity)
 FIELDALIAS-fwcloud_signature = ThreatName as signature
 FIELDALIAS-fwcloud_signature_id = ThreatID as signature_id
-FIELDALIAS-fwcloud_src = SourceAddress as src
+EVAL-src = coalesce(SourceAddress, PublicIPv4)
 FIELDALIAS-fwcloud_src_host = SourceDeviceHost as src_host
 FIELDALIAS-fwcloud_src_interface = InboundInterface as src_interface
 EVAL-src_ip = coalesce(SourceAddress, PublicIPv4)
@@ -98,8 +98,6 @@ FIELDALIAS-fwcloud_vsys_id = VirtualSystemID as vsys_id
 FIELDALIAS-fwcloud_vsys_name = VirtualSystemName as vsys_name
 
 LOOKUP-vendor_action = pan_vendor_action_lookup vendor_action OUTPUT action
-FIELDALIAS-src_for_pan_cloud = src_ip as src
-FIELDALIAS-dest_for_pan_cloud = dest_ip as dest
 FIELDALIAS-dvc_for_pan_cloud = host as dvc
 
 EVAL-dest_name = replace(dest_hostname, "^([^:/]+).*", "\1")