[UptimeRobot] Test with regex that accepts decimals

[paulmelnikow]

For #1359

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  26) Uptime Robot
       Uptime Robot: Percentage (valid)
         
  [ GET http://localhost:1111/uptimerobot/ratio/m778918918-3e92c097147760ee39d02d36.json ]:
     ValidationError: child "value" fails because ["value" with value "99.992%" fails to match the required pattern: /^[0-9]+%$/]
      at Object.exports.process (node_modules/joi/lib/errors.js:190:19)
      at internals.Object._validateWithOptions (node_modules/joi/lib/types/any/index.js:669:31)
      at module.exports.internals.Any.root.validate (node_modules/joi/lib/index.js:139:23)
      at Object.pathMatch.matchJSONTypes (node_modules/icedfrisby/lib/pathMatch.js:303:9)
      at node_modules/icedfrisby/lib/icedfrisby.js:703:10
      at IcedFrisbyNock._invokeExpects (node_modules/icedfrisby/lib/icedfrisby.js:1294:33)
      at start (node_modules/icedfrisby/lib/icedfrisby.js:1274:12)
      at Request.runCallback [as _callback] (node_modules/icedfrisby/lib/icedfrisby.js:1232:16)
      at Request.self.callback (node_modules/request/request.js:186:22)
      at Request.<anonymous> (node_modules/request/request.js:1163:10)
      at IncomingMessage.<anonymous> (node_modules/request/request.js:1085:12)
      at endReadableNT (_stream_readable.js:1056:12)
      at _combinedTickCallback (internal/process/next_tick.js:138:11)
      at process._tickDomainCallback (internal/process/next_tick.js:218:9)

  27) Uptime Robot
       Uptime Robot: Percentage (valid, with numberOfDays param)
         
  [ GET http://localhost:1111/uptimerobot/ratio/7/m778918918-3e92c097147760ee39d02d36.json ]:
     ValidationError: child "value" fails because ["value" with value "99.967%" fails to match the required pattern: /^[0-9]+%$/]
      at Object.exports.process (node_modules/joi/lib/errors.js:190:19)
      at internals.Object._validateWithOptions (node_modules/joi/lib/types/any/index.js:669:31)
      at module.exports.internals.Any.root.validate (node_modules/joi/lib/index.js:139:23)
      at Object.pathMatch.matchJSONTypes (node_modules/icedfrisby/lib/pathMatch.js:303:9)
      at node_modules/icedfrisby/lib/icedfrisby.js:703:10
      at IcedFrisbyNock._invokeExpects (node_modules/icedfrisby/lib/icedfrisby.js:1294:33)
      at start (node_modules/icedfrisby/lib/icedfrisby.js:1274:12)
      at Request.runCallback [as _callback] (node_modules/icedfrisby/lib/icedfrisby.js:1232:16)
      at Request.self.callback (node_modules/request/request.js:186:22)
      at Request.<anonymous> (node_modules/request/request.js:1163:10)
      at IncomingMessage.<anonymous> (node_modules/request/request.js:1085:12)
      at endReadableNT (_stream_readable.js:1056:12)
      at _combinedTickCallback (internal/process/next_tick.js:138:11)
      at process._tickDomainCallback (internal/process/next_tick.js:218:9)

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