Increase wait_timeout for Jenkins master

Due to change in the logic of installing Jenkins plugins, the initial Jenkins
container deploy can take more than 10 minutes which was a hardcoded
timeout waiting for Jenkins' availability. The patch increases the timeout
to 30 minutes.

Closes-Bug: PROD-36876
Change-Id: I34bfb8868f589384a443e35028acb19aaf7ef8a8
1 file changed