Explicitly check if $rrd_options is set before using it.  If not, set to a null string so we don't spam the httpd error log.
Explicitly check if $rrd_options is set before using it.  If not, set to a null string
so we don't spam the httpd error log.


hinesmr/monitor-core,dmourati/monitor-core,fastly/monitor-core,lawrencewu/monitor-core,ganglia/monitor-core,ganglia/monitor-core,lawrencewu/monitor-core,NoodlesNZ/monitor-core,ganglia/monitor-core,NoodlesNZ/monitor-core,lawrencewu/monitor-core,torkelsson/monitor-core,lawrencewu/monitor-core,dmourati/monitor-core,phreakocious/monitor-core,lawrencewu/monitor-core,mjzhou/monitor-core,phreakocious/monitor-core,sdgdsffdsfff/monitor-core,ganglia/monitor-core,sdgdsffdsfff/monitor-core,hinesmr/monitor-core,fastly/monitor-core,hinesmr/monitor-core,mjzhou/monitor-core,fastly/monitor-core,fastly/monitor-core,torkelsson/monitor-core,sdgdsffdsfff/monitor-core,ganglia/monitor-core,dmourati/monitor-core,dmourati/monitor-core,phreakocious/monitor-core,dmourati/monitor-core,sdgdsffdsfff/monitor-core,NoodlesNZ/monitor-core,torkelsson/monitor-core,lawrencewu/monitor-core,NoodlesNZ/monitor-core,dmourati/monitor-core,phreakocious/monitor-core,lawrencewu/monitor-core,mjzhou/monitor-core,torkelsson/monitor-core,sdgdsffdsfff/monitor-core,hinesmr/monitor-core,ganglia/monitor-core,phreakocious/monitor-core,NoodlesNZ/monitor-core,torkelsson/monitor-core,mjzhou/monitor-core,sdgdsffdsfff/monitor-core,phreakocious/monitor-core,ganglia/monitor-core,NoodlesNZ/monitor-core,fastly/monitor-core,NoodlesNZ/monitor-core,torkelsson/monitor-core,torkelsson/monitor-core,phreakocious/monitor-core,fastly/monitor-core,mjzhou/monitor-core,hinesmr/monitor-core,ganglia/monitor-core,sdgdsffdsfff/monitor-core,fastly/monitor-core,mjzhou/monitor-core,mjzhou/monitor-core