reorganize playbooks directory

reorganize playbooks directory

In this patch, playbooks will not be deleted temporarily.Diectory
playbooks will be reorganized like this

benchmarks/
├── fio_jobs
│   └── test_job
├── perftest
    ├── common
    │   ├── git_proxy_pbook.yaml
    │   ├── sys_info_pbook.yaml
    │   └── sys_proxy_pbook.yaml
    ├── dhrystone.yaml
    ├── dpi.yaml
    ├── etc
    │   ├── dpi_average.sh
    │   ├── info_collect.py
    │   └── test_job
    ├── fio.yaml
    ├── iperf.yaml
    ├── ramspeed.yaml
    ├── ssl.yaml
    └── whetstone.yaml

utils/
└── transform
    ├── dpi_transform.py
    ├── final_report.py
    ├── fio_transform.py
    ├── __init__.py
    ├── iperf_transform.py
    ├── ramspeed_transform.py
    ├── ssl_transform.py
    └── ubench_transform.py

JIRA: QTIP-131

Change-Id: I41003f2f1935efd15b6221ac05200f391fa8a6a9
Signed-off-by: wu.zhihui <wu.zhihui1@zte.com.cn>