tests: use longer wait times when reconnecting to qemu
tests: use longer wait times when reconnecting to qemu

Be less aggressive when connecting to qemu instance over ssh. It may happen
that the connection cannot be accepted right away because of host keys
generation.

Changelog: none
Signed-off-by: Maciej Borzecki <f609d9f713abcd5f8f0e51f08dc151638a7681e7@rndity.com>

bboozzoo/meta-mender,bboozzoo/meta-mender,bboozzoo/meta-mender,bboozzoo/meta-mender