travis build warnings "duplicate manual mock found"

[danstoner]

One of the mock directories needs to be excluded somewhere. Jester is finding it in both the src and the build directory.

17.00s$ docker run -v $TRAVIS_BUILD_DIR/__tests__/mock:/var/www/__tests__/mock/:ro --rm -it $BUILDING yarn test
yarn run v1.5.1
$ NODE_ENV=test BLUEBIRD_DEBUG=1 jest
Determining test suites to run...ap: duplicate manual mock found:
  Module name: redisclient
  Duplicate Mock path: /var/www/src/__mocks__/redisclient.js
This warning is caused by two manual mock files with the same file name.
Jest will use the mock file found in: 
/var/www/src/__mocks__/redisclient.js
 Please delete one of the following two files: 
 /var/www/build/__mocks__/redisclient.js
/var/www/src/__mocks__/redisclient.js
ap: duplicate manual mock found:
  Module name: searchShim
  Duplicate Mock path: /var/www/src/__mocks__/searchShim.js
This warning is caused by two manual mock files with the same file name.
Jest will use the mock file found in: 
/var/www/src/__mocks__/searchShim.js
 Please delete one of the following two files: 
 /var/www/build/__mocks__/searchShim.js
/var/www/src/__mocks__/searchShim.js
ap: duplicate manual mock found:
  Module name: esclient
  Duplicate Mock path: /var/www/src/__mocks__/esclient.js
This warning is caused by two manual mock files with the same file name.
Jest will use the mock file found in: 
/var/www/src/__mocks__/esclient.js
 Please delete one of the following two files: 
 /var/www/build/__mocks__/esclient.js
/var/www/src/__mocks__/esclient.js
...