BOM connector needs a new crawling URL (getting 503 access denied error)

[t83714]

Current BOM connector URL & setting:

- image:
        name: magda-csw-connector	        name: magda-csw-connector
      id: bom	      id: bom
      name: Bureau of Meteorology	      name: Bureau of Meteorology
      sourceUrl: http://www.bom.gov.au/geonetwork/srv/eng/csw	      sourceUrl: http://www.bom.gov.au/geonetwork/srv/eng/csw
      pageSize: 100	      pageSize: 100

triggers a 503 access denied error:

Failed to GET http://www.bom.gov.au/geonetwork/srv/eng/csw?service=CSW&version=2.0.2&request=GetRecords&constraintLanguage=FILTER&constraint_language_version=1.1.0&resultType=results&elementsetname=full&outputschema=http%3A%2F%2Fwww.isotc211.org%2F2005%2Fgmd&typeNames=gmd%3AMD_Metadata&startPosition=1&maxRecords=100. 1 retries left. Exception:
Error: Invalid Server Response or Empty result returned!
Requesting http://www.bom.gov.au/geonetwork/srv/eng/csw?service=CSW&version=2.0.2&request=GetRecords&constraintLanguage=FILTER&constraint_language_version=1.1.0&resultType=results&elementsetname=full&outputschema=http%3A%2F%2Fwww.isotc211.org%2F2005%2Fgmd&typeNames=gmd%3AMD_Metadata&startPosition=1&maxRecords=100
[xmldom warning]	unclosed xml attribute 
@#[line:6,col:144]
Error: Invalid Server Response or Empty result returned!
    at Request.request_1.default [as _callback] (/usr/src/app/component/dist/Csw.js:207:31)
    at Request.self.callback (/usr/src/app/node_modules/request/request.js:185:22)
    at emitTwo (events.js:126:13)
    at Request.emit (events.js:214:7)
    at Request.<anonymous> (/usr/src/app/node_modules/request/request.js:1161:10)
    at emitOne (events.js:116:13)
    at Request.emit (events.js:211:7)
    at IncomingMessage.<anonymous> (/usr/src/app/node_modules/request/request.js:1083:12)
    at Object.onceWrapper (events.js:313:30)
    at emitNone (events.js:111:20)