Bug 1165236

Description of problem:
If omsnmp trapoid or messageoid parameters are specified as "FILE-MIB::oid_name" instead of OID numeric form (e.g. "1.3.6.1.4.1.19406.1.2.1"), the trap sending fails with error:
rsyslogd-2006: omsnmp_sendsnmp: Adding trap OID failed '
ADISCON-MONITORWARE-MIB::syslogtrap' with error 'Unknown Object Identifier' 
 [try http://www.rsyslog.com/e/2006 ]
The mib files were put in /usr/share/mibs, and /usr/share/snmp/mibs (the  directory reported by net-snmp-config --default-mibdirs).
The same thing works ok in rhel6.
Also, if using the utility snmptrap, it works ok in rhel7:
snmptrap -v 2c -c public udp:my.server.xxx '' 'ADISCON-MONITORWARE-MIB::syslogtrap' 'ADISCON-MONITORWARE-MIB::syslogMsg' s 'test' 'ADISCON-MONITORWARE-MIB::syslogSeverity' i 6 'ADISCON-MONITORWARE-MIB::syslogFacility' i 23 'ADISCON-MONITORWARE-MIB::syslogTag' s 'df_test:'

Version-Release number of selected component (if applicable):
7.4.7-6.el7

How reproducible:
Always.

Steps to Reproduce:

1. Put relevant MIB files defining the OIDs required in /usr/share/mibs and /usr/share/snmp/mibs; e.g. ADISCON-MIB (from http://www.adiscon.org/download/ADISCON-MIB.txt), and ADISCON-MONITORWARE-MIB (from http://www.adiscon.org/download/ADISCON-MONITORWARE-MIB.txt)

2. Configure rsyslog appropirately: e.g. put a file in /etc/rsyslog.d/ called xxx.conf with something like:
# File 1
input(type="imfile"
      File="/var/df/rsyslog_test_file1.txt"
      Tag="df_test_1:"
      Severity="info"
      Facility="local5"
      ReadMode="1"
      StateFile="stat-file1")

# File 2
input(type="imfile"
      File="/var/df/rsyslog_test_file2.txt"
      Tag="df_test_2:"
      Severity="info"
      Facility="local6"
      ReadMode="1"
      StateFile="stat-file2")

module(load="omsnmp")

local5.info action( type="omsnmp"
                    transport="udp"
                    server="my.server.xxx"
                    port="162"
                    version="1"
                    community="public"
                    trapoid="ADISCON-MONITORWARE-MIB::syslogtrap"
                    messageoid="ADISCON-MONITORWARE-MIB::syslogMsg" )

local6.info action( type="omsnmp"
                    transport="udp"
                    server="my.server.xxx"
                    port="162"
                    version="1"
                    community="public"
                    trapoid="1.3.6.1.4.1.19406.1.2.1"
                    messageoid="1.3.6.1.4.1.19406.1.1.2.1" )


3. mkdir /var/df
   touch /var/df/rsyslog_test_file{1,2}.txt
   { echo "test"; echo; } >>rsyslog_test_file2.txt
   works (see /var/log/messages)
   { echo "test"; echo; } >>rsyslog_test_file1.txt
   fails (see /var/log/messages)

Actual results:
Fail with error:
rsyslogd-2006: omsnmp_sendsnmp: Adding trap OID failed 'ADISCON-MONITORWARE-MIB::syslogtrap' with error 'Unknown Object Identifier' 
 [try http://www.rsyslog.com/e/2006 ]

Expected results:
No errors expected.

Additional info: