options: Restore --tls-crypt-v2 inline file capability

options: Restore --tls-crypt-v2 inline file capability

Commit cb2e9218f2bc73f re-factored the internal file handling, but
somehow overlooked the --tls-crypt-v2 option processing.  It was no
longer possible to load a configuration file with this key file inlined.

There where two issues here.  First was that the OPT_P_INLINE flag was
not set, so the option parser rejected --tls-crypt-v2 as inline capable.

Second issue was that the 'streq(p[1], INLINE_FILE_TAG)' check makes no
longer sense, as at this point p[1] contains the file contents.  Instead
use the is_inline flag.

Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20200508114411.15762-1-davids@openvpn.net>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg19859.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>