.env file is not recognized while using gradle gradlew quarkusDev

[jayakrishnankarolilnlsn]

Describe the bug
.env file is not recognized while using gradle ./gradlew quarkusDev.
However, ./mvnw quarkus:dev is running without any issues. It is generating .env symlink under /target directory.

Expected behavior
Application should start without any issues.

Actual behavior

2020-06-03 12:01:28,677 ERROR [io.qua.application] (Quarkus Main Thread) Failed to start 
application: java.util.NoSuchElementException: Property MESSAGE not found
        at io.smallrye.config.SmallRyeConfig.propertyNotFound(SmallRyeConfig.java:209)
        ....
        ....

To Reproduce
Steps to reproduce the behavior:

git clone https://github.com/quarkusio/quarkus-quickstarts.git
git checkout 1.4.2.Final
cd quarkus-quickstarts/config-quickstart
gradle init

# fix the gradle files -> settings.gradle, build.gradle and add gradle.properties

gradlew quarkusDev -> results in startup exceptions

Configuration
application.properties:

greeting.message = ${MESSAGE}
greeting.name = quarkus

.env:

MESSAGE=hello

Screenshots
(If applicable, add screenshots to help explain your problem.)

Environment (please complete the following information):

• Output of uname -a or ver: Microsoft Windows [Version 10.0.18363.720]
• Output of java -version:

java 11.0.6 2020-01-14 LTS
Java(TM) SE Runtime Environment 18.9 (build 11.0.6+8-LTS)
Java HotSpot(TM) 64-Bit Server VM 18.9 (build 11.0.6+8-LTS, mixed mode)

• GraalVM version (if different from Java): NA
• Quarkus version or git rev: 1.4.2
• Build tool (ie. output of mvnw --version or gradlew --version):

------------------------------------------------------------
Gradle 6.2-rc-2
------------------------------------------------------------

Build time:   2020-02-11 22:14:00 UTC
Revision:     8a7f6425a217ceeff6c5a76f8dd533b770606110

Kotlin:       1.3.61
Groovy:       2.5.8
Ant:          Apache Ant(TM) version 1.10.7 compiled on September 1 2019
JVM:          11.0.6 (Oracle Corporation 11.0.6+8-LTS)
OS:           Windows 10 10.0 amd64

Additional context
Feature was added in #7519.
Related issue: #8297

[geoand]

This has actually already been fixed in Quarkus 1.5.0.Final, but I created #9778 to add a proper test