devstudio rpm should depend on upstream eclipse-dtp

lvalach_jira said:

Hi Nick. There are some bundle conflict in latest Devstudio RPM. It seems that since Mat updated rh-eclipse to Oxygen 1 [1] the eclipse includes newer builds of org.eclipse.datatools. and org.eclipse.recommenders..
For example:
/opt/rh/rh-eclipse47/root/usr/share/eclipse/droplets/dtp/eclipse/plugins/org.eclipse.datatools.sqltools.tabledataeditor_1.2.0.v201709211000.jar
(this comes with rh-eclipse47)
and
/opt/rh/rh-eclipse47/root/usr/share/eclipse/droplets/devstudio/eclipse/plugins/org.eclipse.datatools.sqltools.tabledataeditor_1.2.0.201701131441.jar
(this comes with rh-eclipse47-devstudio)
So the version is same but timestamp differs.

Nick replied:

this could just be a "feature-not-a-bug" of rpm builds
in that the versions don't align because the timestamp in the rpm is generated at the time of the build rather than being attached to the github commit date
so... to solve these "same x.y.z but different timestamp" problems we just have to blacklist more plugins/features from the rpm build, and add more Requires: to the spec file