fix(1961): Response does not need to be JSON parsed

[tkyi]

Context

Getting error with _refreshToken():

api_1    | 210906/113528.737, (1630928128201:e464b22cc7bb:20:kt8k149p:10045) [request,server,error] data: SyntaxError: Unexpected token o in JSON at position 1
api_1    |     at JSON.parse (<anonymous>)
api_1    |     at BitbucketScm._refreshToken (/usr/src/app/node_modules/screwdriver-scm-bitbucket/index.js:1042:27)
api_1    |     at runMicrotasks (<anonymous>)
api_1    |     at processTicksAndRejections (internal/process/task_queues.js:97:5)
api_1    |     at async BitbucketScm._getToken (/usr/src/app/node_modules/screwdriver-scm-bitbucket/index.js:1006:13)
api_1    |     at async BitbucketScm._parseUrl (/usr/src/app/node_modules/screwdriver-scm-bitbucket/index.js:322:23)
api_1    |     at async handler (/usr/src/app/node_modules/screwdriver-api/plugins/pipelines/create.js:32:28)
api_1    |     at async exports.Manager.execute (/usr/src/app/node_modules/@hapi/hapi/lib/toolkit.js:60:28)
api_1    |     at async Object.internals.handler (/usr/src/app/node_modules/@hapi/hapi/lib/handler.js:46:20)
api_1    |     at async exports.execute (/usr/src/app/node_modules/@hapi/hapi/lib/handler.js:31:20)
api_1    |     at async Request._lifecycle (/usr/src/app/node_modules/@hapi/hapi/lib/request.js:372:32)
api_1    |     at async Request._execute (/usr/src/app/node_modules/@hapi/hapi/lib/request.js:280:9)
api_1    | 210906/113528.201, (1630928128201:e464b22cc7bb:20:kt8k149p:10045) [response,api,pipelines] http://localhost:9001: post /v4/pipelines {} 500 (538ms)

Objective

Response for getting token no longer needs to be JSON parsed because the screwdriver-request repo returns responses in JSON format.

References

Related to #79, screwdriver-cd/screwdriver#2553

License

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