[TESTAPI] Add chown to allow start in openshift

[TESTAPI] Add chown to allow start in openshift

Some files of the testapi are located in system directories
- /etc/opnfv_testapi
- /usr/local/share/opnfv_testapi

it requires some root priviledge to execute them properly
especially in an openshift environment
this patch force the user right for these directories

another option could be to move these files in home directory
but so fare we are just changing the dockerization and did not
modify the code of the API.

Signed-off-by: morganrol <morgan.richomme@orange.com>
Change-Id: I7f9607f31e97d3bf8462ebe07fad0714aac47bdd