/vagrant/project.properties: no such file or directory

[grtjn]

When running without project.properties (which should be allowed) you get:

==> test-ml1: sed: can't read /vagrant/project.properties: No such file or directory

Check for presence of the file..

[grtjn]

Also causes:

==> test-ml1: /opt/vagrant/install-ml-centos.sh: line 37: [: : integer expression expected
==> test-ml1: /opt/vagrant/install-ml-centos.sh: line 39: [: : integer expression expected
==> test-ml1: /opt/vagrant/install-ml-centos.sh: line 41: [: : integer expression expected

and

==> test-ml1: /opt/vagrant/install-mlcp.sh: line 13: [: : integer expression expected
==> test-ml1: /opt/vagrant/install-mlcp.sh: line 15: [: : integer expression expected

Use = instead of -eq for robustness