Reformat shell scripts with shfmt

All changes in this commit were automated using the command:

  shfmt -w -i 2 -ci -bn . $(find . -name "*.sh.in")

By default, only *.sh and files without extension are checked, so
*.sh.in files have to be added additionally. (See mvdan/sh#944)

bin/tests/system/enginepkcs11/prereq.sh

@@ -14,19 +14,19 @@
 . ../conf.sh
 
 [ -n "${SOFTHSM2_CONF}" ] || {
-    echo_i "skip: softhsm2 configuration not available"
-    exit 255
+  echo_i "skip: softhsm2 configuration not available"
+  exit 255
 }
 
 parse_openssl_config
 [ -f "$SOFTHSM2_MODULE" ] || {
-    echo_i "skip: softhsm2 module not available"
-    exit 1
+  echo_i "skip: softhsm2 module not available"
+  exit 1
 }
 
 for _bin in softhsm2-util pkcs11-tool; do
-    command -v "$_bin" >/dev/null || {
-        echo_i "skip: $_bin not available"
-        exit 1
-    }
+  command -v "$_bin" >/dev/null || {
+    echo_i "skip: $_bin not available"
+    exit 1
+  }
 done