Setting the version to be the same as the sdk version and ignore the
version passed in.  This solves the problem where upgrading the sdk with
an old config will still cause the sdk to report its version properly.
This isn't meant to apply to the merchantSdk attribute - only the version
attribute.  The version attribute will always be MAJOR.MINOR and may not
change for bugfix releases of the sdk.  The merchantSdkAttribute will
always be MAJOR.MINOR.REVISION and there may be multiple REVSION releases
per minor XML version