Default to OpenSSL 1.0 (#3100)

* Added version 1.1 to openssl
* restore note explaining preferred=True for 1.0.2k

var/spack/repos/builtin/packages/openssl/package.py

@@ -33,19 +33,18 @@ class Openssl(Package):
        Layer Security (TLS) and Secure Sockets Layer (SSL) protocols.
        It is also a general-purpose cryptography library."""
     homepage = "http://www.openssl.org"
+
     # URL must remain http:// so Spack can bootstrap curl
     url = "http://www.openssl.org/source/openssl-1.0.1h.tar.gz"
     list_url = "https://www.openssl.org/source/old/"
     list_depth = 2
 
-    # Note: Version 1.0.2 is the "long-term support" version that will
-    # remain supported until 2019. We could thus make this version the
-    # preferred version, if we find that many packages cannot handle
-    # version 1.1.
     version('1.1.0e', '51c42d152122e474754aea96f66928c6')
     version('1.1.0d', '711ce3cd5f53a99c0e12a7d5804f0f63')
     version('1.1.0c', '601e8191f72b18192a937ecf1a800f3f')
-    version('1.0.2k', 'f965fc0bf01bf882b31314b61391ae65')
+    # Note: Version 1.0.2 is the "long-term support" version that will
+    # remain supported until 2019.
+    version('1.0.2k', 'f965fc0bf01bf882b31314b61391ae65', preferred=True)
     version('1.0.2j', '96322138f0b69e61b7212bc53d5e912b')
     version('1.0.2i', '678374e63f8df456a697d3e5e5a931fb')
     version('1.0.2h', '9392e65072ce4b614c1392eefc1f23d0')