Improve environment printing format

[lemonez]

DEV-331 - making env-listing output more user friendly

@zeryx is there a case when the environments response comes back as empty list? I've added some code for sorting the environments but I didn't add any error handling for this case.

[lemonez]

oops broke the test

[lemonez]

@zeryx please see comment in initial PR description

[lemonez]

hey @zeryx I forgot this was still a draft PR. please have a look when able.

[zeryx]

Looks like your test modifications fail, not sure if you're able to access gitlab; in any case here's the failure message:

self = <Test.CLI_test.CLITest testMethod=test_get_environment>
    def test_get_environment(self):
    	result = CLI().get_environment_by_language("python2",self.client)
    	print(result)
    	if("error" in result):
    		print(result)
>   	self.assertTrue(result is not None and "Python 2.7" in result)
E    AssertionError: False is not true
Test/CLI_test.py:180: AssertionError
----------------------------- Captured stdout call -----------------------------
['Display Name                                  Specification ID                        ', '********************************************************************************', 'Python 2.7                                    f626effa-e519-431e-9d7a-0d3a7563ae1e    ', 'Python 2.7 + GPU support                      faf81400-eb15-4f64-81c0-3d4ed7181e77    ']
_________________________ CLITest.test_list_languages __________________________
self = <Test.CLI_test.CLITest testMethod=test_list_languages>
    def test_list_languages(self):
    	result = CLI().list_languages(self.client)
    	if("error" in result[0]):
    		print(result)
>   	self.assertTrue(result is not None and "anaconda3" in result[1])
E    AssertionError: False is not true
Test/CLI_test.py:186: AssertionError