tools/src/main/shell/*.sh: Expand tabs for consistency (#2548)

@@ -20,7 +20,7 @@ usage() {
     echo "and imports server public key to client keystore"
     echo "usage: ./client.keygen.sh [-p file]"
     echo "    -p | --props | --properties file  Properties file. default value is ./keygen.properties"
-	echo "    -h | --help  | ?                  Show this message"
+    echo "    -h | --help  | ?                  Show this message"
 }
 
 PROPERTIES_FILE=keygen.properties

@@ -23,7 +23,7 @@ usage() {
     echo "    -d | --dir directory              Server keystore directory, where the generated keystore file will be copied. If specified, overrides the value from the properties file"
     echo "                                      Default value is SERVER_KEYSTORE_DIR property from properties file"
     echo "    -p | --props | --properties file  Properties file. default value is ./keygen.properties"
-	echo "    -h | --help | ?                   Show this message"
+    echo "    -h | --help | ?                   Show this message"
 }
 
 COPY=true;
@@ -155,4 +155,4 @@ if [[ $COPY = true ]]; then
         fi
     fi
 fi
-echo "Done."
\ No newline at end of file
+echo "Done."