Bump CATS default timeout to 90 seconds
Bump CATS default timeout to 90 seconds

Saw a test flake due to hitting the current 60s timeout

Signed-off-by: Gareth Clay <8aba8f4b00339badb90ac755871f48a24e433180@pivotal.io>

masters-of-cats/grootfs-release,masters-of-cats/grootfs-release