Service fixes

Updated README

Contrail

This reverts commit ef5ebed.

The problem here is a backwards-incompatible change to
configure_auth_token_middleware.  Plugins are still passing a
"signing_dir" which is interpreted now as the "section" argument
... this leads to an interesting red-herring issue; because "v" is a
gnu sed command for checking the version, a signing_dir of "/var/..."
(as done in most plugins) gives the weird error:

 sed: -e expression #1, char 32: expected newer version of sed

I think we'll either need a new function, or dummy arguments to get
this back in.

Change-Id: I2098d4eb2747282622cf486fa7dbf216f932f58b

I941ef5ea90970a0901236afe81c551aaf24ac1d8 added a sed command that
should match and delete path values but used '/' as sed separator. This
leads to error in unstack.sh runs when the path also contains '/':

+./unstack.sh:main:188 sudo sed -i '/directory=/opt/stack/ d' /etc/gitconfig
sed: -e expression #1, char 13: unknown command: `o'

So this patch replace '/' separator with '+'.

Change-Id: I06811c0d9ee7ecddf84ef1c6dd6cff5129dbf4b1

I941ef5ea90970a0901236afe81c551aaf24ac1d8 added a sed command that
should match and delete path values but used '/' as sed separator. This
leads to error in unstack.sh runs when the path also contains '/':

+./unstack.sh:main:188 sudo sed -i '/directory=/opt/stack/ d' /etc/gitconfig
sed: -e expression #1, char 13: unknown command: `o'

So this patch replace '/' separator with '+'.

Change-Id: I06811c0d9ee7ecddf84ef1c6dd6cff5129dbf4b1
(cherry picked from commit 7191c5e)

I941ef5ea90970a0901236afe81c551aaf24ac1d8 added a sed command that
should match and delete path values but used '/' as sed separator. This
leads to error in unstack.sh runs when the path also contains '/':

+./unstack.sh:main:188 sudo sed -i '/directory=/opt/stack/ d' /etc/gitconfig
sed: -e expression #1, char 13: unknown command: `o'

So this patch replace '/' separator with '+'.

Change-Id: I06811c0d9ee7ecddf84ef1c6dd6cff5129dbf4b1
(cherry picked from commit 7191c5e)
(cherry picked from commit 7cfe946)

I941ef5ea90970a0901236afe81c551aaf24ac1d8 added a sed command that
should match and delete path values but used '/' as sed separator. This
leads to error in unstack.sh runs when the path also contains '/':

+./unstack.sh:main:188 sudo sed -i '/directory=/opt/stack/ d' /etc/gitconfig
sed: -e expression openstack#1, char 13: unknown command: `o'

So this patch replace '/' separator with '+'.

Change-Id: I06811c0d9ee7ecddf84ef1c6dd6cff5129dbf4b1