Concatenate the RUN commands
Concatenate the RUN commands

JIRA: FUNCTEST-636

Whenever running RUN command, a new image layer is created. It would be recommended to group commands into groups to decrease layers.

Change-Id: Iae9287b2a7fd11705b5f25807fab652afa0ccb74
Signed-off-by: helenyao <3eb787ab97713f28a85d5a5517e91512dad61756@huawei.com>

mywulin/functest,opnfv/functest,mywulin/functest,opnfv/functest