emulators/dynamips-community: 0.2.12 -> 0.2.15

• Add optional argument 'format' to hypervisor commands
  • 'send_con_msg' and 'send_aux_msg'.
  • Report "X byte(s) written" on succeess.
  • String formats:
    • plain - plain string (default, old behavior)
    • base64 - base64 encoded string
• Use an auxiliary variable to record configured ram size for npe-400
• Fixed issue #49 - IOS crashes after router restart
• Fixed issue #50 - vm send_con_msg

PR: 194066
Submitted by: Pavel Volkov <pavelivolkov@gmail.com> (maintainer)