gnu: connman: Use localstatedir outside of store.

* gnu/packages/connman.scm (connman): Use localstatedir outside of store.

gnu/packages/connman.scm

@@ -55,6 +55,9 @@ (define-public connman
              "--enable-vpnc"
              "--enable-pptp"
              "--enable-l2tp"
+             ;; location for daemon state files and internal configuration
+             ;; needs to be writeable
+             "--localstatedir=/var"
              (string-append
               "--with-dbusconfdir=" (assoc-ref %outputs "out") "/etc")
              (string-append