apache.conf set DavLockDBType to sdbm

With the recent change that drops apr-util-bdb build require, in
favor of httpd, t5540 started failing on tests using git-httpd-push.
This patch sets DavLockDBType to sdbm, fixing these failures.

git-test-apache-davlockdbtype-config.patch

@@ -0,0 +1,14 @@
+diff -ur b/t/lib-httpd/apache.conf a/t/lib-httpd/apache.conf
+--- b/t/lib-httpd/apache.conf	2024-01-09 11:06:46.660868023 +0100
++++ a/t/lib-httpd/apache.conf	2024-01-09 11:09:09.572713625 +0100
+@@ -272,7 +272,9 @@
+ <IfDefine DAV>
+ 	LoadModule dav_module modules/mod_dav.so
+ 	LoadModule dav_fs_module modules/mod_dav_fs.so
+-
++	<IfDirective DavLockDBType>
++   		DavLockDBType sdbm
++	</IfDirective>
+ 	DAVLockDB DAVLock
+ 	<Location /dumb/>
+ 		Dav on

git.spec

@@ -130,6 +130,10 @@ Patch3:         0003-t-lib-git-svn-try-harder-to-find-a-port.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=2247532#c8
 Patch4:         0001-send-email-avoid-duplicate-specification-warnings.patch 
 
+# Configurates Apache test server to use `DavLockDBType sdbm`
+# Prevents t5540 failures on i686, s390x and ppc64le
+Patch5:         git-test-apache-davlockdbtype-config.patch
+
 %if %{with docs}
 # pod2man is needed to build Git.3pm
 BuildRequires:  /usr/bin/pod2man