Add restart instructions in Xnode jobs

After implementing a solution as described above, a CMN20 job should include some extra JCL comment lines as in this sample (from line 00024 to 00037):

VIEW     CMNP.R.STGRMT.CDXB.#001079.X.PRDC(CDXB2079) - 01.0 Columns 00001 00072
Command ===>                                                    Scroll ===> CSR
000022 //*)IM CMN$$SJN END
000023 //*)IM CMN20
000024 //*)IM ASZINFO - RESTART INFORMATION FOR OPERATIONS CONTROL
000025 //*
000026 //* ******************************************************************
000027 //* TO RESTART THIS JOB:
000028 //*    - LOGON TO THE MVS SYSTEM CMC.PROD
000029 //*    - RESTART THE JOB IN CMNP.R.STGRMT.CDXB.#001079.X.PRDC(CDXB2079)
000030 //*      USING AUTHORIZED USER ID CCMNPRD FROM THE FAILED STEP
000031 //*
000032 //* FOR MORE INFO CALL CHANGE MAN SUPPORT:
000033 //*    - PHONE: 0123/44.55.66 (BUSINESS HOURS)
000034 //*    - PAGER: 0123/11.22.33
000035 //* ******************************************************************
000036 //*
000037 //*EOF ASZINFO - RESTART INFORMATION FOR OPERATIONS CONTROL