Update travis config

[mrpasquini]

I suspect a rebuild on the main branch will currently fail so attempting to get a green build on this PR.

• Drop EOL ruby versions
• Add latest supported ruby versions
• Allow ruby-head to fail
• Remove outdated sudo: false config

[mrpasquini]

The test_no_sslv3 test seems to raise either:

• #<OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=error: tlsv1 alert internal error> which passes
• Errno::ECONNRESET(<Connection reset by peer - SSL_connect>) which fails.

I can reproduce the pass on 2.5.8 locally and the failure on 2.5.3 locally so it likely depends on the Ruby & OpenSSL versions installed.

I've added a commit to catch this Errno::ECONNRESET error during connection setup and reraise as an OpenSSL::SSL::SSLError, thought I am not sure that is the correct approach and would appreciate feedback.

It looks like WEBrick might be throwing a segfault.

[mrpasquini]

Project does not seem active, closing this PR

[nahi]

Sorry for the late response. The fix is correct, the error happens when underlying openssl does not allow to use SSLv3 (server does not start.) I marked this test as omit until we disable TLSv1 and reuse the test. Thanks for the patch.