zlib, openssl: return to http URLs (#33324)

In #3113, `https` was removed to ensure that `curl` can be bootstrapped
without SSL being present. This was lost in #25672 which aimed to use
`https` where possible.

Co-authored-by: Bernhard Kaindl <43588962+bernhardkaindl@users.noreply.github.com>

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

@@ -20,7 +20,7 @@ class Openssl(Package):  # Uses Fake Autotools, should subclass Package
     homepage = "https://www.openssl.org"
 
     # URL must remain http:// so Spack can bootstrap curl
-    url = "https://www.openssl.org/source/openssl-1.1.1d.tar.gz"
+    url = "http://www.openssl.org/source/openssl-1.1.1d.tar.gz"
     list_url = "https://www.openssl.org/source/old/"
     list_depth = 1
 

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

@@ -21,7 +21,7 @@ class Zlib(MakefilePackage, Package):
 
     homepage = "https://zlib.net"
     # URL must remain http:// so Spack can bootstrap curl
-    url = "https://zlib.net/fossils/zlib-1.2.11.tar.gz"
+    url = "http://zlib.net/fossils/zlib-1.2.11.tar.gz"
 
     version("1.2.13", sha256="b3a24de97a8fdbc835b9833169501030b8977031bcb54b3b3ac13740f846ab30")
     version(