configure: default test-helper to disabled
configure: default test-helper to disabled

Make all checking conform to the principle that it is off by default

Signed-off-by: Anders Roxell <b4e8e89057bc64bc4f9625a4a821c9ac177a7ed2@linaro.org>
Reviewed-by: Ricardo Salveti <6fd42f733b6586c555e01d4ff3116fc7e73e7330@linaro.org>
Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

ravineet-singh/odp,ravineet-singh/odp,nmorey/odp,ravineet-singh/odp,mike-holmes-linaro/odp,mike-holmes-linaro/odp,dkrot/odp,nmorey/odp,mike-holmes-linaro/odp,erachmi/odp,erachmi/odp,nmorey/odp,nmorey/odp,erachmi/odp,ravineet-singh/odp,dkrot/odp,mike-holmes-linaro/odp,erachmi/odp,dkrot/odp,dkrot/odp