Fixed path errors

external-script-iaas/hypervisor-show.sh

 #!/bin/bash
-python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/hypervisor-show
+#python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/hypervisor-show
+python /usr/lib/zabbix/externalscripts/zabbix-external-scripts/hypervisor-show

external-script-iaas/prisma-iaas.sh

 #!/bin/bash
-python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/prisma-iaas
+#python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/prisma-iaas
+python /usr/lib/zabbix/externalscripts/zabbix-external-scripts/prisma-iaas

external-script-metrics/ceilometer-for-tests.sh

 #!/bin/bash
 for i in {1..500}
 do
-    python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/ceilometer $1 $2 
+    python /usr/lib/zabbix/externalscripts/zabbix-external-scripts/ceilometer $1 $2 
     #sleep `perl -e 'printf("%.2f\n", rand())'`
 done
 wait

external-script-metrics/ceilometer-mock.sh

 #!/bin/bash
-python "$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"/ceilometer-mock $1 $2  
+python /usr/lib/zabbix/externalscripts/zabbix-external-scripts/ceilometer-mock $1 $2