OGC CITE WMS test suite-Service exception not returned following a request with UPDATESEQUENCE equal to current update sequence

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The server that receives a request which contains an UPDATESEQUENCE parameter
equal to the current UPDATESEQUENCE of the WMS server and is not returning an
exception.

test path: parameterwms/wmsops/getcapabilities/params/updatesequence/2

The server should return an exception of the code="CurrentUpdateSequence" when
receiving the above URL.

See http://www.digitalearth.gov/wmt/xml/exception_1_1_1.dtd

Bug found in MapServer 4.0B.

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After further reading of the OGC specification, the UPDATESEQUENCE parameter is
optional.  The problem is that MapServer is advertizing an UPDATESEQUENCE
parameter equal to zero.  And the OGC test suite is validating the presence of
this parameter in the capabilities documents send by the WMS Server.  If this
parameter is present the relative test cases are executed and failed.

There are two choices here:

1) We remove the UPDATESEQUENCE parameter in the capabilities document sent by
the WMS server

2) We support the UPDATESEQUENCE parameter as described in the specification
section 7.1.3.4

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Fixed in 4.3 by removing the "UPDATESEQUENCE" parameter in the capabilities
document sent by the WMS server (see comment #1).

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Verified.