chore: exclude firestore and spanner samples from formatting (#1295)

* chore: exclude firestore and spanner samples from formatting

* chore: remove comment

* chore: create a temporary file

* chore: fix command

Author: Neenu1995

docker/owlbot/java/bin/format_source.sh

@@ -17,4 +17,22 @@ set -e
 
 # Find all the java files relative to the current directory and format them
 # using google-java-format
-find . -name '*.java' | xargs java -jar /owlbot/google-java-format.jar --replace
+list="$(find . -name '*.java' )"
+tmpfile=$(mktemp)
+
+for file in $list;
+do
+  if [[ "$file" =~ ".*/samples/snippets/src/main/java/com/example/firestore/Quickstart.java" ]];
+  then
+    echo "File skipped formatting: $file"
+  elif [[ "$file" =~ ".*/samples/snippets/src/main/java/com/example/spanner/.*.java" ]];
+  then
+    echo "File skipped formatting: $file"
+  else
+   echo $file >> $tmpfile
+  fi
+done
+
+cat $tmpfile | xargs java -jar /owlbot/google-java-format.jar --replace
+
+rm $tmpfile