check_http_proxy

Hi.
Good job.
Here is a patch to add perf data to output.


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print "PROXY OK - {0}|time={1}s;{warntime:.2f};{timeout:.2f};0;{timeout:.2f}".format(msg, duration, **cfg)
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print "PROXY WARNING - {0}|time={1}s;{warntime:.2f};{timeout:.2f};0;{timeout:.2f}".format(msg, duration, **cfg)
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print "PROXY CRITICAL - {0}|time={1}s;{warntime:.2f};{timeout:.2f};0;{timeout:.2f}".format(msg, duration, **cfg)
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print "PROXY UNKNWON - {0}|time={1}s;{warntime:.2f};{timeout:.2f};0;{timeout:.2f}".format(msg, duration, **cfg)
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report_critical("Timed out (over {timeout:.2f}s)".format(**cfg), "{0:.2f}".format(duration))
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report_critical("Request failed ({0})".format(e), 999)
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report_unknown("Request failed: ({0})".format(`e`), "{0:.2f}".format(duration))
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report_critical("Failed content check ({expect})".format(**cfg), "{0:.2f}".format(duration))
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= {warntime:.2f}s)".format(duration, **cfg))
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> report_warning("Over warning time ({0:.2f}s >= {warntime:.2f}s)".format(duration, **cfg), "{0:.2f}".format(duration))
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report_ok("Request return in {0:.2f} seconds".format(duration), "{0:.2f}".format(duration))

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