IMPORTANT fix made:

fixed in ssh module the execute command to wait in a loop for
channel(s) readyness instead of the simple 'if'. It waits for
max 10 seconds.

Other fixes in computeresource module - all tests I got passed here.
Merge branch 'master' into fix-computeresource
flake8 happier - indention, new line issue
change the constant to be counted by seconds
Merge branch 'master' into fix-computeresource
Merge pull request #464 from gkhachik/fix-computeresource

IMPORTANT: fix in ssh module and more