Build saithrift with python3.9 in bullseye (#1541)

* Build saithrift with python3.9 in bullseye

Bullseye upgrade the python to python3.9 and other image, like buster still using python 2.7.
To build with different python in different image, add a condition for copy differernt install file in different type of image.

Signed-off-by: richardyu-ms <richard.yu@microsoft.com>

* change the release name to version number and reuse existing files

Signed-off-by: richardyu-ms <richard.yu@microsoft.com>

Co-authored-by: richardyu <richardyu@contoso.com>

debian/copy_installer.sh

@@ -1,8 +1,14 @@
 if [[ x"$1" =~ x"v2" ]]
 then
-   echo "Copy python-saithriftv2.install as python-saithrift.install"
-   cp ./debian/installerFiles/python-saithriftv2.install ./debian/python-saithrift.install
+   echo "Copy python3-saithrift.install as python-saithrift.install"
+   cp ./debian/installerFiles/python3-saithrift.install ./debian/python-saithrift.install
 else
-   echo "Copy python-saithriftv1.install as python-saithrift.install"
-   cp ./debian/installerFiles/python-saithriftv1.install ./debian/python-saithrift.install
+   if [ $(lsb_release -sr) -ge 11 ]
+   then
+      echo "Copy python3-saithrift.install as python-saithrift.install after Ver.11 releases"
+      cp ./debian/installerFiles/python3-saithrift.install ./debian/python-saithrift.install
+   else
+      echo "Copy python2.7-saithrift.install as python-saithrift.install"
+      cp ./debian/installerFiles/python2.7-saithrift.install ./debian/python-saithrift.install
+   fi   
 fi

debian/installerFiles/python-saithriftv1-bullseye.install

@@ -0,0 +1,2 @@
+#compatiable with bullseye python 3.9 environment
+debian/usr/local/lib/python3.9/site-packages/* /usr/lib/python3/dist-packages/

debian/installerFiles/python3-saithrift.install

@@ -0,0 +1,2 @@
+#compatiable with bullseye python 3.9 environment and saithriftv2 build with python3
+debian/usr/local/lib/python3*/site-packages/* /usr/lib/python3/dist-packages/