Fix for CTS test CtsAppSecurityHostTestCases

Fix random failures while running CtsAppSecurityHostTestCases with
adoptable storage due to a format failure. The crypto_blkdev node
might not be immediately available after create sometimes. Adding
a wait in create to make sure the node is available.

CRs-Fixed: 2324063
Change-Id: I8a7599a9253ac530b05a97ed34829dad1f7f7a40
1 file changed