rsyslog-conf: add validation and error handling

Validate server IP address. Handle exceptions.

Change-Id: I6da9949dbf90dd12853afca8050b68b3aaad144e
Signed-off-by: Deepak Kodihalli <dkodihal@in.ibm.com>
diff --git a/phosphor-rsyslog-config/Makefile.am b/phosphor-rsyslog-config/Makefile.am
index f695946..d1c5425 100644
--- a/phosphor-rsyslog-config/Makefile.am
+++ b/phosphor-rsyslog-config/Makefile.am
@@ -1,3 +1,5 @@
+AM_CPPFLAGS = -I$(top_srcdir)
+
 noinst_HEADERS = \
 	utils.hpp \
 	server-conf.hpp