update default.xml.

init OpenHarmony-3.1-Beta
Signed-off-by: Nmamingshuai <mamingshuai1@huawei.com>

default.xml

@@ -2,7 +2,7 @@
 <manifest>
   <remote fetch="." name="origin" review="https://openharmony.gitee.com/openharmony/"/>
   <remote fetch="https://gitee.com/openharmony-sig" name="sig" review="https://gitee.com/openharmony-sig/"/>
-  <default remote="origin" revision="master" sync-j="4" />
+  <default remote="origin" revision="OpenHarmony-3.1-Beta" sync-j="4" />
 
   <project name="miscservices_inputmethod" path="base/miscservices/inputmethod" />
 
@@ -269,7 +269,7 @@
   <project name="third_party_gettext" path="third_party/gettext"/>
   <project name="third_party_libpsl" path="third_party/libpsl"/>
   <project name="third_party_libsoup" path="third_party/libsoup"/>
-  <project name="third_party_tinyalsa" path="third_party/tinyalsa" revision="hihope-origin" remote="sig"/>
+  <project name="third_party_tinyalsa" path="third_party/tinyalsa" revision="OpenHarmony-3.1-Beta" remote="sig"/>
   <project name="update_app" path="base/update/app"/>
   <project name="update_packaging_tools" path="base/update/packaging_tools"/>
   <project name="update_updater" path="base/update/updater"/>