[master] Added Changelog entry for #3183.

Also additional trivial fixes applied: fixed the Changelog entry number
for #3211 and git commit id for #3199.

ChangeLog

@@ -1,4 +1,9 @@
-7XX.	[bug]		tomek
+702.	[func]		marcin
+	perfdhcp: support for sending DHCPv6 Renew messages at the specified
+	rate and measure performance.
+	(Trac #3183, git 66f2939830926f4337623b159210103b5a8e2434)
+
+701.	[bug]		tomek
 	libdhcp++: Incoming DHCPv6 IAPREFIX option is now parsed properly.
 	(Trac #3211, git ed43618a2c7b2387d76f99a5a4b1a3e05ac70f5e)
 
@@ -63,7 +68,7 @@
 	libdhcp++: Created definitions for standard DHCPv4 options:
 	tftp-server-name (66) and boot-file-name (67). Also, fixed definition
 	of DHCPv4 option time-offset (2).
-	(Trac #3199, git abcd)
+	(Trac #3199, git 6e171110c4dd9ae3b1be828b9516efc65c33460b)
 
 690.	[bug]		tomek
 	b10-dhcp4: Relay Agent Info option is now echoed back in