Add new files for running criu-coredump via python 2 or 3

Previous commit added support for python3 in criu-coredump. For convenience,
add two files (coredump-python2 and coredump-python3) that start
criu-coredump with respective python version. Edit env.sh accordingly.

Signed-off-by: Andrey Vyazovtsev <viazovtsev.av@phystech.edu>

coredump/coredump.py

@@ -0,0 +1,39 @@
+import argparse
+import os
+
+import criu_coredump
+
+def coredump(opts):
+	generator = criu_coredump.coredump_generator()
+	cores = generator(os.path.realpath(opts['in']))
+	for pid in cores:
+		if opts['pid'] and pid != opts['pid']:
+			continue
+		with open(os.path.realpath(opts['out'])+"/core."+str(pid), 'wb+') as f:
+			cores[pid].write(f)
+
+
+def main():
+	desc = 'CRIU core dump'
+	parser = argparse.ArgumentParser(description=desc,
+			formatter_class=argparse.RawTextHelpFormatter)
+
+	parser.add_argument('-i',
+			    '--in',
+			    default = '.',
+			    help = 'directory where to get images from')
+	parser.add_argument('-p',
+			    '--pid',
+			    type = int,
+			    help = 'generate coredump for specific pid(all pids py default)')
+	parser.add_argument('-o',
+			    '--out',
+			    default = '.',
+			    help = 'directory to write coredumps to')
+
+	opts = vars(parser.parse_args())
+
+	coredump(opts)
+
+if __name__ == '__main__':
+	main()