Add .sh extension to shell scripts

Use .sh(.in) file extension consistently for shell scripts
to allow more reliable detection of shell scripts based on their file
extension.

(cherry picked from commit 2d690499dd)

.gitattributes

@@ -9,5 +9,5 @@
 /doc/dev			 export-ignore
 /util/**			 export-ignore
 /util/bindkeys.pl		-export-ignore
-/util/check-make-install.in	-export-ignore
+/util/check-make-install.sh.in	-export-ignore
 /util/dtrace.sh		-export-ignore

.gitignore

@@ -65,7 +65,7 @@ timestamp
 # Gets generated by Build Ear (bear)
 /compile_commands.commands.json
 /tsan
-/util/check-make-install
+/util/check-make-install.sh
 /INSTALL
 doc/man/dnssec-cds.8in
 doc/man/dnssec-checkds.8in

.gitlab-ci.yml

@@ -395,7 +395,7 @@ stages:
     - *check_readline_setup
     - make -j${BUILD_PARALLEL_JOBS:-1} -k all V=1
     - test -z "${RUN_MAKE_INSTALL}" || make DESTDIR="${INSTALL_PATH}" install
-    - test -z "${RUN_MAKE_INSTALL}" || DESTDIR="${INSTALL_PATH}" sh util/check-make-install
+    - test -z "${RUN_MAKE_INSTALL}" || DESTDIR="${INSTALL_PATH}" sh util/check-make-install.sh
     - if [[ "${CFLAGS}" == *"-fsanitize=address"* ]]; then ( ! grep -F AddressSanitizer config.log ); fi
     - test -z "${CROSS_COMPILATION}" || grep -F -A 1 "checking whether we are cross compiling" config.log | grep -q "result.*yes"
     - test -z "${CROSS_COMPILATION}" || file lib/dns/gen | grep -F -q "ELF 64-bit LSB"
@@ -674,7 +674,7 @@ coccinelle:
   <<: *precheck_job
   needs: []
   script:
-    - util/check-cocci
+    - util/check-cocci.sh
     - if test "$(git status --porcelain | grep -Ev '\?\?' | wc -l)" -gt "0"; then git status --short; exit 1; fi
 
 doctest:

configure.ac

@@ -1669,7 +1669,7 @@ AC_CONFIG_FILES([fuzz/Makefile])
 
 # Misc
 
-AC_CONFIG_FILES([util/check-make-install])
+AC_CONFIG_FILES([util/check-make-install.sh])
 
 #
 # Do it