test: move resource intensive tests to sequential

To enable greater parallelization of tests on CI, move resource
intensive tests out of parallel and into sequential.

Ref: https://github.com/nodejs/node/pull/4476
PR-URL: https://github.com/nodejs/node/pull/4615
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: James M Snell <jasnell@gmail.com>

diff --git a/test/parallel/test-dgram-pingpong.js b/test/sequential/test-dgram-pingpong.js
similarity index 100%
rename from test/parallel/test-dgram-pingpong.js
rename to test/sequential/test-dgram-pingpong.js

diff --git a/test/parallel/test-http-regr-gh-2928.js b/test/sequential/test-http-regr-gh-2928.js
similarity index 100%
rename from test/parallel/test-http-regr-gh-2928.js
rename to test/sequential/test-http-regr-gh-2928.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-1-ascii.js b/test/sequential/test-stringbytes-external-exceed-max-by-1-ascii.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-1-ascii.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-1-ascii.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-1-base64.js b/test/sequential/test-stringbytes-external-exceed-max-by-1-base64.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-1-base64.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-1-base64.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-1-binary.js b/test/sequential/test-stringbytes-external-exceed-max-by-1-binary.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-1-binary.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-1-binary.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-1-hex.js b/test/sequential/test-stringbytes-external-exceed-max-by-1-hex.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-1-hex.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-1-hex.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-1-utf8.js b/test/sequential/test-stringbytes-external-exceed-max-by-1-utf8.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-1-utf8.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-1-utf8.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max-by-2.js b/test/sequential/test-stringbytes-external-exceed-max-by-2.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max-by-2.js
rename to test/sequential/test-stringbytes-external-exceed-max-by-2.js

diff --git a/test/parallel/test-stringbytes-external-exceed-max.js b/test/sequential/test-stringbytes-external-exceed-max.js
similarity index 100%
rename from test/parallel/test-stringbytes-external-exceed-max.js
rename to test/sequential/test-stringbytes-external-exceed-max.js