Making ssh host port configurable.

Fixes #63
Get available port for test

Fixes #58
Fixing bug about removing closed request was not working fine.

Fixes #57
Moving Request test classes to request package and adding message when
there is not request for access id token.

Fixes #62
Removing trailing blank lines of get request and instance messages

Fixes #50
Create start-manager
Update fogbow-cli

Fixing fogbow-cli
Update start-manager
Update start-manager

Fixing start-manager
Update fogbow-cli

returning the initial settings.
Configuring log4j programmatically. Testing.
Create ConfigurationConstants class and refactor tests to use it
Making loaded images configurable (not only predefined images)
Refactor cloud specific schemes to the configuration file (just one
openstack property)

Fixes #53
Fixes #61
Configuring log4j programmatically. Testing.
Merge branch 'develop' of https://github.com/fogbow/fogbow-manager.git into develop
Replacing references to properties to use ConfigurationConstants 
Getting random port at OCCITestHelper test class
Update fogbow-cli
Update start-manager
Removing System.out.println. Fixing lofg4.
Fixing cli/Main.
Removing restlet log.