Rename docs/testing/developer/design to docs/testing/developer/devguide

See https://git.opnfv.org/opnfvdocs/tree/docs/testing/testing-dev.rst

Change-Id: Iac14adf4a2876fd74972dcf6279f7022e92cb9b5
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/testing/developer/design/_assets/sequence.png b/docs/testing/developer/devguide/_assets/sequence.png
similarity index 100%
rename from docs/testing/developer/design/_assets/sequence.png
rename to docs/testing/developer/devguide/_assets/sequence.png

diff --git a/docs/testing/developer/design/_assets/standalone.png b/docs/testing/developer/devguide/_assets/standalone.png
similarity index 100%
rename from docs/testing/developer/design/_assets/standalone.png
rename to docs/testing/developer/devguide/_assets/standalone.png

diff --git a/docs/testing/developer/design/api.rst b/docs/testing/developer/devguide/api.rst
similarity index 100%
rename from docs/testing/developer/design/api.rst
rename to docs/testing/developer/devguide/api.rst

diff --git a/docs/testing/developer/design/arch.rst b/docs/testing/developer/devguide/arch.rst
similarity index 100%
rename from docs/testing/developer/design/arch.rst
rename to docs/testing/developer/devguide/arch.rst

diff --git a/docs/testing/developer/design/cli.rst b/docs/testing/developer/devguide/cli.rst
similarity index 100%
rename from docs/testing/developer/design/cli.rst
rename to docs/testing/developer/devguide/cli.rst

diff --git a/docs/testing/developer/design/compute-qpi.rst b/docs/testing/developer/devguide/compute-qpi.rst
similarity index 100%
rename from docs/testing/developer/design/compute-qpi.rst
rename to docs/testing/developer/devguide/compute-qpi.rst

diff --git a/docs/testing/developer/design/index.rst b/docs/testing/developer/devguide/index.rst
similarity index 100%
rename from docs/testing/developer/design/index.rst
rename to docs/testing/developer/devguide/index.rst