Correct sha tests

These tests were checking for specific sha variants, when they should
just check if "sha" is disabled.
Reviewed-by: NStephen Henson <steve@openssl.org>

test/recipes/05-test_sha1.t

@@ -2,4 +2,4 @@
 
 use OpenSSL::Test::Simple;
 
-simple_test("test_sha1", "sha1test", "sha1");
+simple_test("test_sha1", "sha1test", "sha");

test/recipes/05-test_sha256.t

@@ -2,4 +2,4 @@
 
 use OpenSSL::Test::Simple;
 
-simple_test("test_sha256", "sha256t", "sha256");
+simple_test("test_sha256", "sha256t", "sha");

test/recipes/05-test_sha512.t

@@ -2,4 +2,4 @@
 
 use OpenSSL::Test::Simple;
 
-simple_test("test_sha512", "sha512t", "sha512");
+simple_test("test_sha512", "sha512t", "sha");