(#136) - Skip migration tests against CouchDB master
(#136) - Skip migration tests against CouchDB master

The browser migration tests fail against CouchDB master because older
versions of PouchDB (<=3.2.0) don't support replication against it.
Given that migrations are well tested against other servers, skip them
against CouchDB master for now.

shimaore/pouchdb,optikfluffel/pouchdb,elkingtonmcb/pouchdb,Charlotteis/pouchdb,tyler-johnson/pouchdb,tohagan/pouchdb,bbenezech/pouchdb,janl/pouchdb,pouchdb/pouchdb,yaronyg/pouchdb,lukevanhorn/pouchdb,asmiller/pouchdb,nicolasbrugneaux/pouchdb,p5150j/pouchdb,johnofkorea/pouchdb,patrickgrey/pouchdb,tohagan/pouchdb,patrickgrey/pouchdb,shimaore/pouchdb,adamvert/pouchdb,TechnicalPursuit/pouchdb,lukevanhorn/pouchdb,microlv/pouchdb,ramdhavepreetam/pouchdb,TechnicalPursuit/pouchdb,shimaore/pouchdb,KlausTrainer/pouchdb,ntwcklng/pouchdb,mwksl/pouchdb,optikfluffel/pouchdb,nickcolley/pouchdb,patrickgrey/pouchdb,asmiller/pouchdb,nickcolley/pouchdb,cshum/pouchdb,seigel/pouchdb,crissdev/pouchdb,johnofkorea/pouchdb,jhs/pouchdb,callahanchris/pouchdb,mattbailey/pouchdb,mwksl/pouchdb,slang800/pouchdb,willholley/pouchdb,cesarmarinhorj/pouchdb,HospitalRun/pouchdb,pouchdb/pouchdb,yaronyg/pouchdb,h4ki/pouchdb,lakhansamani/pouchdb,janraasch/pouchdb,Actonate/pouchdb,HospitalRun/pouchdb,Knowledge-OTP/pouchdb,nicolasbrugneaux/pouchdb,p5150j/pouchdb,marcusandre/pouchdb,TechnicalPursuit/pouchdb,johnofkorea/pouchdb,jhs/pouchdb,p5150j/pouchdb,mwksl/pouchdb,adamvert/pouchdb,yaronyg/pouchdb,mainerror/pouchdb,Actonate/pouchdb,optikfluffel/pouchdb,seigel/pouchdb,Charlotteis/pouchdb,ntwcklng/pouchdb,mikeymckay/pouchdb,cesarmarinhorj/pouchdb,mikeymckay/pouchdb,crissdev/pouchdb,mattbailey/pouchdb,crissdev/pouchdb,lakhansamani/pouchdb,daleharvey/pouchdb,colinskow/pouchdb,microlv/pouchdb,daleharvey/pouchdb,Actonate/pouchdb,daleharvey/pouchdb,garrensmith/pouchdb,ntwcklng/pouchdb,Charlotteis/pouchdb,elkingtonmcb/pouchdb,callahanchris/pouchdb,Knowledge-OTP/pouchdb,mainerror/pouchdb,KlausTrainer/pouchdb,bbenezech/pouchdb,slang800/pouchdb,Dashed/pouchdb,ramdhavepreetam/pouchdb,Dashed/pouchdb,KlausTrainer/pouchdb,garrensmith/pouchdb,colinskow/pouchdb,pouchdb/pouchdb,slang800/pouchdb,lakhansamani/pouchdb,bbenezech/pouchdb,cdaringe/pouchdb,mikeymckay/pouchdb,asmiller/pouchdb,lukevanhorn/pouchdb,Knowledge-OTP/pouchdb,microlv/pouchdb,tyler-johnson/pouchdb,cdaringe/pouchdb,adamvert/pouchdb,greyhwndz/pouchdb,seigel/pouchdb,colinskow/pouchdb,cshum/pouchdb,cshum/pouchdb,jhs/pouchdb,greyhwndz/pouchdb,garrensmith/pouchdb,tohagan/pouchdb,elkingtonmcb/pouchdb,marcusandre/pouchdb,willholley/pouchdb,mattbailey/pouchdb,greyhwndz/pouchdb,willholley/pouchdb,callahanchris/pouchdb,janraasch/pouchdb,h4ki/pouchdb,janraasch/pouchdb,cdaringe/pouchdb,tyler-johnson/pouchdb,cesarmarinhorj/pouchdb,h4ki/pouchdb,mainerror/pouchdb,janl/pouchdb,Dashed/pouchdb,nickcolley/pouchdb,ramdhavepreetam/pouchdb,janl/pouchdb,HospitalRun/pouchdb,marcusandre/pouchdb,nicolasbrugneaux/pouchdb