[ci] Fix bug with -Dtests.jvm.argline
[ci] Fix bug with -Dtests.jvm.argline

The special `-Dtests.jvm.argline` params needed for jdk-9 builds do not
get passed correctly if enclosed within single quotes.

Fix jdk9 target for `dev-tools/ci` script to correctly pass the
-Dtests.jvm.argline parameters.

Relates:  elastic/elasticsearch#4428 

Original commit: elastic/x-pack-elasticsearch@6cd329b8dad8b952b2da567459f7ba4308f7d4b9

robin13/elasticsearch,scorpionvicky/elasticsearch,HonzaKral/elasticsearch,robin13/elasticsearch,HonzaKral/elasticsearch,strapdata/elassandra,uschindler/elasticsearch,GlenRSmith/elasticsearch,gingerwizard/elasticsearch,nknize/elasticsearch,coding0011/elasticsearch,nknize/elasticsearch,coding0011/elasticsearch,scorpionvicky/elasticsearch,vroyer/elassandra,GlenRSmith/elasticsearch,robin13/elasticsearch,gingerwizard/elasticsearch,HonzaKral/elasticsearch,uschindler/elasticsearch,vroyer/elassandra,GlenRSmith/elasticsearch,HonzaKral/elasticsearch,uschindler/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,uschindler/elasticsearch,coding0011/elasticsearch,uschindler/elasticsearch,gfyoung/elasticsearch,gfyoung/elasticsearch,nknize/elasticsearch,nknize/elasticsearch,vroyer/elassandra,robin13/elasticsearch,gingerwizard/elasticsearch,gingerwizard/elasticsearch,scorpionvicky/elasticsearch,strapdata/elassandra,scorpionvicky/elasticsearch,strapdata/elassandra,gingerwizard/elasticsearch,strapdata/elassandra,scorpionvicky/elasticsearch,coding0011/elasticsearch,gingerwizard/elasticsearch,coding0011/elasticsearch,gfyoung/elasticsearch,strapdata/elassandra,robin13/elasticsearch,gfyoung/elasticsearch,nknize/elasticsearch,gfyoung/elasticsearch,gingerwizard/elasticsearch