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/masterformat/setup.sh

@@ -27,5 +27,5 @@ awk 'END {
 	 for (i = 0; i < 512; i++ ) { print "a TXT", i; }
 	 for (i = 0; i < 1024; i++ ) { print "b TXT", i; }
 	 for (i = 0; i < 2000; i++ ) { print "c TXT", i; }
-}' < /dev/null >> ns1/large.db
+}' </dev/null >>ns1/large.db
 cd ns1 && $SHELL compile.sh