curl: Add ptest support

curl: Add ptest support

Add a ptest for curl.

It is a backport for
  http://cgit.openembedded.org/openembedded-core/commit/meta/recipes-support/curl?id=a0ea00daace826129cdec8f714ca7b7c60e9dadf
  http://cgit.openembedded.org/openembedded-core/commit/meta/recipes-support/curl?id=0b1e3746478e9ad1800b027ab5dc96495997807e
  http://cgit.openembedded.org/openembedded-core/commit/meta/recipes-support/curl?id=e885875f2af9cee0e7557ee130d3180492e507dd

It should be deleted after yocto version up.

SPEC-4753

Signed-off-by: Qiu Tingting <qiutt@fujitsu.com>
Change-Id: Ic4848d1aea6c4991f0a7ff8c0dcb51c07211312e