Fix passing of ispecs in cluster init during QA
Fix passing of ispecs in cluster init during QA

The ispecs were previously passed as multiple parameters to gnt-cluster
init, which did not yield the desired result. This patch changes this
behavior and passes the min/std/max values in one parameter.

Signed-off-by: Thomas Thrainer <98bdeac947eb8ca18146e9ce7f092788ec242cd1@google.com>
Reviewed-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>

ganeti/ganeti,leshchevds/ganeti,apyrgio/ganeti,mbakke/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,apyrgio/ganeti,grnet/snf-ganeti,leshchevds/ganeti,mbakke/ganeti,onponomarev/ganeti,andir/ganeti,ganeti/ganeti,andir/ganeti,mbakke/ganeti,andir/ganeti,dimara/ganeti,onponomarev/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/snf-ganeti,bitemyapp/ganeti,apyrgio/snf-ganeti,yiannist/ganeti,yiannist/ganeti,yiannist/ganeti,ganeti/ganeti,bitemyapp/ganeti,leshchevds/ganeti