Working with other repositories

**Describe the bug**
boot fails to download jar files from other repositories.

**To Reproduce**
Steps to reproduce the behavior:

1. Save boot file below as `build.jahmm.boot`

```
;; Copyright © 2016 Dynamic Object Language Labs Inc.
;;
;; This software is licensed under the terms of the
;; Apache License, Version 2.0 which can be found in
;; the file LICENSE at the root of this distribution.

(def project 'dollabs/pamela-tools)
(def version "0.0.1-SNAPSHOT")
(def description "Pamela Tools")
(def project-url "https://github.com/dollabs/pamela-tools")

(println "get-env repositories before" (get-env :repositories))
(set-env!

:repositories #(conj % ["jahmm repo" {:url "https://repo.springsource.org/libs-release-remote"}])
:dependencies '[
[onetom/boot-lein-generate "RELEASE" :scope "test"]
[be.ac.ulg.montefiore.run.jahmm/jahmm "0.6.2"]
]
)

(println "get-env repositories after" (get-env :repositories))

```

2. Invoke boot as `boot -f build.jahmm.boot aot -a`

```
get-env repositories before [[clojars {:url https://repo.clojars.org/}] [maven-central {:url https://repo1.maven.org/maven2}]]
get-env repositories after [[clojars {:url https://repo.clojars.org/}] [maven-central {:url https://repo1.maven.org/maven2}] [jahmm repo {:url https://repo.springsource.org/libs-release-remote}]]
prakash@Rising-Sun-2 ~/p/d/g/pamela-tools> boot -f build.jahmm.boot aot -a
get-env repositories before [[clojars {:url https://repo.clojars.org/}] [maven-central {:url https://repo1.maven.org/maven2}]]
Boot.main Boot.java: 258
...
boot.App.main App.java: 500
boot.App.runBoot App.java: 407
org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke ClojureRuntimeShimImpl.java: 150
org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke ClojureRuntimeShimImpl.java: 159
...
boot.main/-main main.clj: 216
boot.main/-main/fn main.clj: 216
clojure.core/load-string core.clj: 3959
clojure.core/load-reader core.clj: 3957
...
boot.user$eval31.invoke : 16
boot.user$eval31.invokeStatic : 16
...
boot.core/set-env! core.clj: 876
...
clojure.core/swap! core.clj: 2253
clojure.core/swap! core.clj: 2263
...
clojure.core/update-in core.clj: 5939
clojure.core/update-in core.clj: 5950
clojure.core/apply core.clj: 648
...
clojure.core/partial/fn core.clj: 2517
...
boot.core/fn core.clj: 833
boot.core/add-dependencies! core.clj: 290
boot.pod/resolve-release-versions pod.clj: 584
boot.pod/call-in* pod.clj: 413
...
org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke ClojureRuntimeShimImpl.java: 102
org.projectodd.shimdandy.impl.ClojureRuntimeShimImpl.invoke ClojureRuntimeShimImpl.java: 109
...
boot.pod/call-in* pod.clj: 410
boot.pod/eval-fn-call pod.clj: 359
clojure.core/apply core.clj: 646
...
boot.aether/resolve-release-versions aether.clj: 269
...
clojure.core/memoize/fn core.clj: 6107
clojure.core/apply core.clj: 646
...
boot.aether/resolve-dependencies* aether.clj: 117
...
cemerick.pomegranate.aether/resolve-dependencies aether.clj: 815
clojure.core/apply core.clj: 646
...
cemerick.pomegranate.aether/resolve-dependencies* aether.clj: 806
...
org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies DefaultRepositorySystem.java: 376
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts DefaultArtifactResolver.java: 255
org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve DefaultArtifactResolver.java: 430
org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads DefaultArtifactResolver.java: 529
org.eclipse.aether.connector.basic.BasicRepositoryConnector.get BasicRepositoryConnector.java: 258
org.eclipse.aether.connector.basic.BasicRepositoryConnector$DirectExecutor.execute BasicRepositoryConnector.java: 590
org.eclipse.aether.util.concurrency.RunnableErrorForwarder$1.run RunnableErrorForwarder.java: 76
org.eclipse.aether.connector.basic.BasicRepositoryConnector$TaskRunner.run BasicRepositoryConnector.java: 364
org.eclipse.aether.connector.basic.ArtifactTransportListener.transferFailed ArtifactTransportListener.java: 48
org.eclipse.aether.transfer.ArtifactNotFoundException: Could not find artifact onetom:boot-lein-generate:jar:0.1.2 in jahmm repo (https://repo.springsource.org/libs-release-remote)
artifact: #object[org.eclipse.aether.artifact.DefaultArtifact 0xb7838a9 "onetom:boot-lein-generate:jar:0.1.2"]
fromCache: false
repository: #object[org.eclipse.aether.repository.RemoteRepository 0x7fe7c640 "jahmm repo (https://repo.springsource.org/libs-release-remote, default, releases+snapshots)"]
org.eclipse.aether.resolution.ArtifactResolutionException: Could not find artifact onetom:boot-lein-generate:jar:0.1.2 in jahmm repo (https://repo.springsource.org/libs-release-remote)
result: #object[org.eclipse.aether.resolution.ArtifactResult 0x73dce0e6 "null < null"]
results: [#object[org.eclipse.aether.resolution.ArtifactResult 0x73dce0e6 "null < null"] #object[org.eclipse.aether.resolution.ArtifactResult 0x2eced48b "be.ac.ulg.montefiore.run.jahmm:jahmm:jar:0.6.2 < jahmm repo (https://repo.springsource.org/libs-release-remote, default, releases+snapshots)"]]
org.eclipse.aether.resolution.DependencyResolutionException: Could not find artifact onetom:boot-lein-generate:jar:0.1.2 in jahmm repo (https://repo.springsource.org/libs-release-remote)
result: #object[org.eclipse.aether.resolution.DependencyResult 0x4b7e96a "[null < null, be.ac.ulg.montefiore.run.jahmm:jahmm:jar:0.6.2 < jahmm repo (https://repo.springsource.org/libs-release-remote, default, releases+snapshots)]"]
clojure.lang.ExceptionInfo: Could not find artifact onetom:boot-lein-generate:jar:0.1.2 in jahmm repo (https://repo.springsource.org/libs-release-remote)
line: 16

```

**Expected behavior**

3. Comment 'lein generate' dependency as `;[onetom/boot-lein-generate "RELEASE" :scope "test"]` and run same command

```
boot -f build.jahmm.boot aot -a
get-env repositories before [[clojars {:url https://repo.clojars.org/}] [maven-central {:url https://repo1.maven.org/maven2}]]
Retrieving jahmm-0.6.2.pom from https://repo.springsource.org/libs-release-remote/ (4k)
Retrieving jahmm-0.6.2.jar from https://repo.springsource.org/libs-release-remote/ (119k)
get-env repositories after [[clojars {:url https://repo.clojars.org/}] [maven-central {:url https://repo1.maven.org/maven2}] [jahmm repo {:url https://repo.springsource.org/libs-release-remote}]]

```

**Screenshots**
None

**Desktop (please complete the following information):**
- OS: MacOS Mojave and Ubuntu 18.04
- Browser / NA
- Version
```
cat ~/.boot/boot.properties
#http://boot-clj.com
#Mon Mar 11 13:54:42 EDT 2019
BOOT_CLOJURE_NAME=org.clojure/clojure
BOOT_CLOJURE_VERSION=1.8.0
BOOT_VERSION=2.8.2

```