scripts: Make Collect script consider log levels
scripts: Make Collect script consider log levels

Added extra patterns to the collect script to extract specific logs
records at specific log levels; an error log entry is always an error,
regardless of whether it's message text matches any of the other
heuristic patterns.

Fixes #1049.

Signed-off-by: James O. D. Hunt <348fbaadfbada55ea105602bf5609e23ac1c4898@intel.com>

clearcontainers/runtime,chavafg/runtime,devimc/runtime,chavafg/runtime,clearcontainers/runtime,devimc/runtime