xen, xen-tools: update recipes for python3

Adds patches for packaged scripts to enable deployment with python3
where they have been ported to python 3 upstream.

setuptools3 inherits distutils3 which modifies ${B}, so cd ${S} is
needed in the do_configure, do_compile and do_install steps.

Remove python 2 dependency from the Xen recipes by adding a new
separate recipe, xen-python2, for packaging the remaining optional
scripts which are yet to be ported to python 3. Package naming in
the separate recipe is chosen to support transition back into the
xen-tools recipe if the scripts are ported later.

Use RSUGGESTS to support inclusion of the xen-python2 scripts in
images that include python 2.

Drop the remus package python dependency since the script was removed
in 2014: commit 5b66f84e37a45038f9e5dae7a5768a5525d1e6ba

Add python3 RDEPENDS needed to run xenmon.

Signed-off-by: Christopher Clark <christopher.clark6@baesystems.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/recipes-extended/xen/files/xen-tools-pygrub-change-tabs-into-spaces.patch b/recipes-extended/xen/files/xen-tools-pygrub-change-tabs-into-spaces.patch
new file mode 100644
index 00000000..d913be20
--- /dev/null
+++ b/recipes-extended/xen/files/xen-tools-pygrub-change-tabs-into-spaces.patch
@@ -0,0 +1,40 @@
+From b9e1368af14ded6aee3bdf64e8329628b16291ff Mon Sep 17 00:00:00 2001
+From: Wei Liu <wei.liu2@citrix.com>
+Date: Mon, 11 Mar 2019 12:55:29 +0000
+Subject: [PATCH] pygrub: change tabs into spaces
+
+Not sure why Python 2 never complained, but Python 3 does.
+
+Change tabs to spaces.
+
+Signed-off-by: Wei Liu <wei.liu2@citrix.com>
+Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
+---
+ tools/pygrub/src/pygrub | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/tools/pygrub/src/pygrub b/tools/pygrub/src/pygrub
+index 52a8965ad9..1189b1ca48 100755
+--- a/tools/pygrub/src/pygrub
++++ b/tools/pygrub/src/pygrub
+@@ -858,7 +858,7 @@ if __name__ == "__main__":
+             output_directory = a
+ 
+     if debug:
+-       logging.basicConfig(level=logging.DEBUG)
++        logging.basicConfig(level=logging.DEBUG)
+ 
+ 
+     try:
+@@ -917,7 +917,7 @@ if __name__ == "__main__":
+             # IOErrors raised by fsimage.open
+             # RuntimeErrors raised by run_grub if no menu.lst present
+             if debug:
+-               traceback.print_exc()
++                traceback.print_exc()
+             fs = None
+             continue
+ 
+-- 
+2.17.1
+