script/ceph-backport: allow hyphen in project during ceph fork deduction

This will allow the fork deduction code to recognize project names
that include a hyphen, such as:

    [email protected]:USERNAME/ceph-fork.git

Signed-off-by: J. Eric Ivancich <[email protected]>

Author: ivancich

src/script/ceph-backport.sh

@@ -779,7 +779,7 @@ function maybe_deduce_remote {
     else
         assert_fail "bad remote_type ->$remote_type<- in maybe_deduce_remote"
     fi
-    remote=$(git remote -v | grep --extended-regexp --ignore-case '(://|@)github.com(/|:|:/)'${url_component}'/ceph(\s|\.|\/)' | head -n1 | cut -f 1)
+    remote=$(git remote -v | grep --extended-regexp --ignore-case '(://|@)github.com(/|:|:/)'${url_component}'/ceph(\s|\.|\/|-)' | head -n1 | cut -f 1)
     echo "$remote"
 }