test: bump timeout for TEST-50-DISSECT and TEST-67-INTEGRITY

TEST-67-INTEGRITY times out quite often, and when it passes
it does so a few seconds short of the timeout. It's a slow
qemu test, so bump the timeout.
TEST-50-DISSECT has been reported to fail in the same way
on Debian's infrastructure, again narrowly failing or passing
just short of the timeout.

test/TEST-50-DISSECT/test.sh

@@ -12,7 +12,7 @@ TEST_INSTALL_VERITY_MINIMAL=1
 # shellcheck source=test/test-functions
 . "${TEST_BASE_DIR:?}/test-functions"
 
-QEMU_TIMEOUT=300
+QEMU_TIMEOUT=600
 
 command -v mksquashfs >/dev/null 2>&1 || exit 0
 command -v veritysetup >/dev/null 2>&1 || exit 0

test/TEST-67-INTEGRITY/test.sh

@@ -5,7 +5,7 @@ set -e
 TEST_DESCRIPTION="dm-integrity test"
 
 TEST_NO_NSPAWN=1
-QEMU_TIMEOUT=300
+QEMU_TIMEOUT=600
 
 # shellcheck source=test/test-functions
 . "${TEST_BASE_DIR:?}/test-functions"