Fix basic30 to add timeout for dhclient execution

Change-Id: Iee8c4e1344af6219b4fb27841d689e6ab51a658b
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>

robot-systest/testsuite/basic_30-ns_ipv6_profile.robot

@@ -107,7 +107,9 @@ Verify Vnf1 Interfaces
     Variable Should Exist   ${VNF1_IPMGMT}   msg=IP address of the data VNF '${VNF_MEMBER_INDEX_1}' is not available
     Variable Should Exist   ${PRIVATEKEY}   msg=SSH private key not available
     Sleep   120 seconds   Wait for SSH daemon to be up
-    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF1_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   sudo dhclient -6 ens4 ; ip --brief addr show up | grep -v "^lo" | awk '{print $3}'
+    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF1_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   sudo timeout 30s dhclient -v -6 ens4
+    Log   ${stdout}
+    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF1_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   ip --brief addr show up | grep -v "^lo" | awk '{print $3}'
     Log   ${stdout}
     @{ip}=   Split String   ${stdout}
     Should Match Regexp   ${ip}[1]   ${DATANET1_PREFIX}   msg=${ip}[1] doesn't match subnet's regexp ${DATANET1_PREFIX}
@@ -116,7 +118,9 @@ Verify Vnf2 Interfaces
     [Documentation]   Check whether IP addresses of the second VNF configured inside the VM meet the expected CIDR.
     Variable Should Exist   ${VNF2_IPMGMT}   msg=IP address of the data VNF '${VNF_MEMBER_INDEX_2}' is not available
     Variable Should Exist   ${PRIVATEKEY}   msg=SSH private key not available
-    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF2_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   sudo dhclient -6 ens4 ; ip --brief addr show up | grep -v "^lo" | awk '{print $3}'
+    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF2_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   sudo timeout 30s dhclient -v -6 ens4
+    Log   ${stdout}
+    ${stdout}=   Execute Remote Command Check Rc Return Output   ${VNF2_IPMGMT}   ${USERNAME}   ${EMPTY}   ${PRIVATEKEY}   ip --brief addr show up | grep -v "^lo" | awk '{print $3}'
     Log   ${stdout}
     @{ip}=   Split String   ${stdout}
     Should Match Regexp   ${ip}[1]   ${DATANET1_PREFIX}   msg=${ip}[1] doesn't match subnet's regexp ${DATANET1_PREFIX}