Update mime types to add gz and gzip extensions

Author: varunnvs92

core/sdk-core/src/main/resources/software/amazon/awssdk/core/util/mime.types

@@ -37,6 +37,8 @@ application/font-tdpfr				pfr
 application/gml+xml				gml
 application/gpx+xml				gpx
 application/gxf					gxf
+application/gzip					gz
+application/gzip					gzip
 application/hyperstudio				stk
 application/inkml+xml				ink inkml
 application/ipfix				ipfix

services/s3/src/test/java/software/amazon/awssdk/services/s3/internal/handlers/PutObjectHeaderTest.java

@@ -84,6 +84,27 @@ public void putObjectFile_headerShouldContainContentType() throws IOException {
         verify(putRequestedFor(anyUrl()).withHeader(CONTENT_TYPE, equalTo("text/html")));
     }
 
+    @Test
+    public void putObject_gzipFile_hasProperContentType() throws IOException {
+        File file = new RandomTempFile("test.gz", 10);
+        stubFor(any(urlMatching(".*"))
+                    .willReturn(response()));
+        s3Client.putObject(putObjectRequest, RequestBody.fromFile(file));
+        verify(putRequestedFor(anyUrl()).withHeader(CONTENT_TYPE, equalTo("application/gzip")));
+    }
+
+    @Test
+    public void putObject_gzipFile_shouldNotOverrideContentTypeInRequest() throws IOException {
+        File file = new RandomTempFile("test.gz", 10);
+        String contentType = "something";
+        stubFor(any(urlMatching(".*"))
+                    .willReturn(response()));
+
+        s3Client.putObject(putObjectRequest.toBuilder().contentType(contentType).build(),
+                           RequestBody.fromFile(file));
+        verify(putRequestedFor(anyUrl()).withHeader(CONTENT_TYPE, equalTo(contentType)));
+    }
+
     @Test
     public void putObjectUnknownFileExtension_contentTypeDefaultToBeStream() throws IOException {
         File file = new RandomTempFile("test.unknown", 10);