Extend retry sleep after server fault

Change Ic9eed8352c64f183ca4077e141c6b94f81a9b91a introduced retry sleep
for server errors, but the 1 second sleep is not enough for some cases.

Related-Bug: #2030855
Change-Id: Ib8072397b873c7856523228efaa4ccd7911deda5
1 file changed