Ignore line length for bashate

I am not sure we really need to care about a line length that's 90
chars instead of 79. We have so many ugly things here, I am not
sure this will impact positively the readability to force line breaks.

Without this patch, all the shell scripts changes will fail with
a bashate failure, due to the fact that the
recently introduced changes in tools/make_missing_releases.sh
have lines of length above 79.

The alternative would be to fix those lines. There are only 3 of them.

Change-Id: I5fc7bde3c60c50ae78e3c7f297f715a7591e486c

tox.ini

@@ -53,7 +53,7 @@ commands = bash -c "find {toxinidir}          \
          -not -name \*~                       \
          -not -name \*.md                     \
          -name \*.sh                          \
-         -print0 | xargs -0 bashate -v"
+         -print0 | xargs -0 bashate -i E006 -v"
 
 [testenv:aclmanager]
 commands = python {toxinidir}/tools/aclmanager.py {posargs}