oe-publish-sdk: fix layers init via ssh

Escaping does not work in my use case. It must be escaped for
python, ssh and shell as well as for different versions of echo.
Let's try it a little less elegant, but hopefully more reliable.

(From OE-Core rev: cdbc9bf63b3e1354800032d0dd530949bafb7032)

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5cc1ae332eb6b05d83802c8d64ab2767c7079412)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/oe-publish-sdk

@@ -106,7 +106,7 @@ def publish(args):
     if not is_remote:
         cmd = 'set -e; mkdir -p %s/layers; cd %s/layers; if [ ! -e .git ]; then git init .; cp .git/hooks/post-update.sample .git/hooks/post-commit; echo "*.pyc\n*.pyo\npyshtables.py" > .gitignore; fi; git add -A .; git config user.email "oe@oe.oe" && git config user.name "OE" && git commit -q -m "init repo" || true' % (destination, destination)
     else:
-        cmd = "ssh %s 'set -e; mkdir -p %s/layers; cd %s/layers; if [ ! -e .git ]; then git init .; cp .git/hooks/post-update.sample .git/hooks/post-commit; echo '*.pyc\n*.pyo\npyshtables.py' > .gitignore; fi; git add -A .; git config user.email 'oe@oe.oe' && git config user.name 'OE' && git commit -q -m \"init repo\" || true'" % (host, destdir, destdir)
+        cmd = "ssh %s 'set -e; mkdir -p %s/layers; cd %s/layers; if [ ! -e .git ]; then git init .; cp .git/hooks/post-update.sample .git/hooks/post-commit; echo '*.pyc' > .gitignore; echo '*.pyo' >> .gitignore; echo 'pyshtables.py' >> .gitignore; fi; git add -A .; git config user.email 'oe@oe.oe' && git config user.name 'OE' && git commit -q -m \"init repo\" || true'" % (host, destdir, destdir)
     ret = subprocess.call(cmd, shell=True)
     if ret == 0:
         logger.info('SDK published successfully')