Bumped version number to 0.8.0
Revert "Fixing start agent"

This reverts commit c1f28ce8c22b2a21839ef137faf2cf23c1035e34.
Fixing the commands that depend on the agent not to start it in scripts.
Fixing version for ssh2.
Adding `azk.version` in manifest templates.
Fixing configure to search and use sudo.
Fixing path to generate mac package in makefile.
Merge branch 'release/v0.8.0' into develop