removed cname lookup middleware

The code has moved to https://github.com/notmyname/swift-cnamelookup.

For current users of cname lookup, this will require installing the new
package and changing the "use" line of the cname lookup conf section's
to:

[filter:cname_lookup]
use = egg:swift_cnamelookup#swift_cnamelookup

And then 'swift-init proxy reload'.

Change-Id: If622486ddb04a53251244c9840aa3cfe72168fc5

doc/manpages/proxy-server.conf.5

@@ -228,33 +228,6 @@ Enables the ability to log request headers. The default is False.
 
 
 
-.RS 0 
-.IP "\fB[filter:cname_lookup]\fR"
-.RE
-
-Note: this middleware requires python-dnspython
-
-.RS 3
-.IP \fBuse\fR
-Entry point for paste.deploy for the cname_lookup middleware. This is the reference to the installed python egg. 
-The default is \fBegg:swift#cname_lookup\fR.
-.IP "\fBset log_name\fR"
-Label used when logging. The default is cname_lookup.
-.IP "\fBset log_facility\fR"
-Syslog log facility. The default is LOG_LOCAL0.
-.IP "\fBset log_level\fR "
-Logging level. The default is INFO.
-.IP "\fBset log_headers\fR"
-Enables the ability to log request headers. The default is False.
-.IP \fBstorage_domain\fR 
-The domain to be used by the middleware.
-.IP \fBlookup_depth\fR
-How deep in the CNAME chain to look for something that matches the storage domain. 
-The default is 1.
-.RE
-
-
-
 .RS 0 
 .IP "\fB[filter:name_check]\fR"
 .RE

doc/source/misc.rst

@@ -139,10 +139,3 @@ Swift3
 .. automodule:: swift.common.middleware.swift3
     :members:
     :show-inheritance:
-
-CNAME Lookup
-============
-
-.. automodule:: swift.common.middleware.cname_lookup
-    :members:
-    :show-inheritance: