Formatter fixes for SAML to support Py2.6

[matburt]

This fix allows the SAML Backend to support Python 2.6

[chrismeyersfsu]

👍 works with py2.6 for me.

[tkajtoch]

Clean commit.
Python 2.6 requires the replacement_field to be filled by the field_name.

Docs: https://docs.python.org/2.6/library/string.html#format-string-syntax

[matburt]

You can use {0} for positional arguments though (which is what is used here)... you just can't use the empty variant {}

[tkajtoch]

@matburt I know. My comment is just some kind of note for @omab to accept this PR quickly :-)

[matburt]

ah, gotcha!

On Thu, Dec 17, 2015 at 5:01 AM, Tomasz Kajtoch notifications@github.com
wrote:

@matburt https://github.com/matburt I know. My comment is just some
kind of note for @omab https://github.com/omab to accept this PR
quickly :-)

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#783 (comment)
.

[omab]

Sorry for the delay.

Thanks!